WO2008035430A1 - Module optique - Google Patents

Module optique Download PDF

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Publication number
WO2008035430A1
WO2008035430A1 PCT/JP2006/318788 JP2006318788W WO2008035430A1 WO 2008035430 A1 WO2008035430 A1 WO 2008035430A1 JP 2006318788 W JP2006318788 W JP 2006318788W WO 2008035430 A1 WO2008035430 A1 WO 2008035430A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical
optical module
substrate
fiber
light
Prior art date
Application number
PCT/JP2006/318788
Other languages
English (en)
Japanese (ja)
Inventor
Tetsuo Takano
Seiichi Yokoyama
Original Assignee
Hoya Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoya Corporation filed Critical Hoya Corporation
Priority to PCT/JP2006/318788 priority Critical patent/WO2008035430A1/fr
Publication of WO2008035430A1 publication Critical patent/WO2008035430A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
    • G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
    • G02B6/29362—Serial cascade of filters or filtering operations, e.g. for a large number of channels
    • G02B6/29365—Serial cascade of filters or filtering operations, e.g. for a large number of channels in a multireflection configuration, i.e. beam following a zigzag path between filters or filtering operations
    • G02B6/29367—Zigzag path within a transparent optical block, e.g. filter deposited on an etalon, glass plate, wedge acting as a stable spacer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
    • G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
    • G02B6/29362—Serial cascade of filters or filtering operations, e.g. for a large number of channels
    • G02B6/29365—Serial cascade of filters or filtering operations, e.g. for a large number of channels in a multireflection configuration, i.e. beam following a zigzag path between filters or filtering operations
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
    • G02B6/2938—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM

Definitions

  • the present invention relates to an optical add / drop multiplexer (optical wavelength multiplexing / demultiplexing device) for branching trunk signal light toward a relay station or inserting signal light from a relay station into the trunk line in the optical communication field. ) And gain equalizers.
  • Patent Document 1 discloses an apparatus used for branching a signal of a specific wavelength to a relay station or inserting a signal of a specific wavelength into a relay station. Is disclosed in! There are known optical add / drop devices (also called optical wavelength multiplexing / demultiplexing devices!).
  • this optical add / drop device includes an optical demultiplexer 3 that demultiplexes wavelength-multiplexed light input from the input optical transmission line 1 into light of each wavelength, and once demultiplexes. And an optical multiplexer 4 for multiplexing the transmitted light of each wavelength and sending it to the output transmission line 2.
  • This optical add / drop device also splits the light of each wavelength demultiplexed by the optical demultiplexer 3 to the receiver 7 of the relay station 8 and then transmits the signal transmitted from the transmitter 6 of the relay station 8.
  • An optical switch 5 for selecting whether to insert a new light or to transmit the light of each wavelength demultiplexed by the optical demultiplexer 3 as it is to the optical multiplexer 4 corresponds to the optical path of each wavelength. There are several.
  • the optical demultiplexer 3 or the optical multiplexer 4 has a wavelength selection filter, a lens, or the like fixed on the outgoing optical path from the optical fiber, and a single wavelength component from the multi-wavelength signal.
  • a filter module having a function of separating or a function of inserting a single wavelength component into a multi-wavelength signal is used.
  • Such a filter module has a configuration in which, as described in Patent Document 2 and Patent Document 3, for example, a collimator including a lens and an optical fiber is disposed facing each other with a wavelength selection filter interposed therebetween. Make it.
  • a filter module a wavelength selection filter, a lens, and an optical fiber are inserted and fixed in a common cylindrical casing with the optical axis adjusted.
  • Such a module is generally called an Add / Drop Multiplexer (ADM).
  • ADM Add / Drop Multiplexer
  • the optical demultiplexer 3 and the optical multiplexer 4 in the optical add / drop device of FIG. 18 need to perform similar multiplexing or demultiplexing for a plurality of wavelengths, and thus have different wavelength separation characteristics.
  • a plurality of filter modules are used, and the optical fibers at the signal input and output ends are connected by a method such as sequential fusion. Such modules are commonly called “Mux / DeMux”.
  • the light input to the optical demultiplexer 3 or the optical multiplexer 4 passes through a plurality of the filter modules in order, so that the light demultiplexed to each wavelength or the light of each wavelength is sequentially multiplexed. (See, for example, Patent Document 4).
  • a plurality of unit modules connected in series are mounted in a single case!
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2000-183816
  • Patent Document 2 Japanese Patent Publication No. 10-511476
  • Patent Document 3 Japanese Patent Laid-Open No. 10-311905
  • Patent Document 4 JP-A-11-337765
  • Patent Document 5 International Publication WO2006Z006197
  • optical modules are required to have high reliability with respect to temperature, humidity, shock, etc., and under general standards, such as temperature cycle test, high temperature and high humidity test, vibration shock test, etc. Evaluations are conducted by conducting various reliability tests.
  • an object of the present invention is to improve the reliability with respect to changes in temperature and humidity at a low price and in a simple manner in a surface mount optical module including the wavelength multiplexer / demultiplexer mentioned above.
  • a plurality of optical components are arranged on the upper surface of a single substrate, and the plurality of optical components are positioned so that light is spatially transmitted between them.
  • the upper surface of the optical component is covered with a connection member so as to cover at least two optical components, and the lower surface of the connection member Is bonded and fixed to the upper surface of the lower optical component.
  • An optical module according to a second aspect of the present invention is the optical module according to the first aspect, wherein a plate-like connecting member is placed on the upper surface of the optical component so as to cover all the optical components, and the connection is made.
  • the lower surface of the member is bonded and fixed to the upper surfaces of all the optical components below it.
  • An optical module according to a third aspect is the optical module according to the first aspect, wherein a fiber collimator is disposed in each of a plurality of positioning grooves formed on an upper surface of the substrate as a kind of the optical component.
  • a plurality of block-shaped optical elements are arranged on the upper surface of the substrate so that light is spatially transmitted between the plurality of fiber collimators through the optical component,
  • the connecting member is covered on the upper surface of at least two of these optical elements, and the lower surface of the connecting member is fixedly attached to the upper surface of the lower optical element.
  • An optical module according to a fourth aspect of the present invention is the optical module according to the third aspect of the present invention, wherein the same or different connecting member is also provided on the plurality of fiber collimators disposed in the positioning grooves. And the lower surface of the connecting member is adhesively fixed to the upper surfaces of the plurality of fiber collimators below it.
  • a plurality of optical components are arranged on an upper surface of a single substrate, and the plurality of optical components are positioned so that light is spatially transmitted between them.
  • an inverted L-shaped or gate-shaped support member having a column member and a beam member is arranged on the substrate, and the support is provided.
  • the lower surface of the pillar member of the member is bonded and fixed to the upper surface of the substrate, the beam member of the support member is covered on the upper surface of at least one optical component, and the lower surface of the beam member is disposed below the optical component. It is characterized in that it is bonded and fixed to the upper surface.
  • An optical module according to a sixth aspect of the present invention is the optical module according to the fifth aspect, wherein the column member and the beam member of the support member are configured as separate parts, and the lower surface of the column member is the substrate.
  • the beam member is covered and bonded and fixed to the upper surface of the column member and the upper surface of the at least one optical component.
  • An optical module according to a seventh aspect is the optical module according to the fifth aspect, wherein the column member and the beam member of the support member are configured in advance as an integral part, and the lower surface of the column member is formed. At the same time as being bonded and fixed to the upper surface of the substrate, the beam member is covered and fixed to the upper surface of the at least one optical component.
  • An optical module according to an eighth invention is the optical module according to any one of the fifth to seventh inventions, wherein a plurality of positioning grooves formed on an upper surface of the substrate as a kind of the optical component.
  • a block-shaped optical element is provided on the upper surface of the substrate so that light is spatially transmitted between the plurality of fiber collimators via itself.
  • At least one beam member is disposed, the beam member of the support member is placed on the upper surface of the at least one optical element, and the lower surface of the beam member is bonded and fixed to the upper surface of the lower optical element.
  • An optical module according to a ninth invention has a plurality of optical components arranged on the upper surface of a single substrate, and the plurality of optical components are positioned so that light is spatially transmitted between them.
  • a surface mount type optical module in which the lower surface of an optical component is bonded and fixed to the upper surface of the substrate, the height of the upper surface of at least one optical component of the plurality of optical components is on the substrate.
  • a member mounting surface is formed, and the lower surface of the connection member is bonded and fixed to the member mounting surface, and the lower surface of the connection member is set at the same level as the member mounting surface. Both are characterized by being attached and fixed on the top surface of one optical component.
  • An optical module according to a tenth invention is the optical module according to the ninth invention, wherein a plurality of positioning grooves are formed on a member mounting surface formed on the substrate, and In addition, a fiber collimator is disposed in each of the plurality of positioning grooves formed on the substrate, and light is spatially transmitted between the plurality of fiber collimators through itself as another type of the optical component.
  • connection member is placed on the upper surface of the fiber collimator and the upper surface of the optical element disposed in the positioning groove, and in this state, the lower surface of the connection member is placed on the member mounting surface, the upper surface of the fiber collimator, and the optical element. Characterized in that had adhered solid boss on the surface.
  • An optical module according to an eleventh aspect of the present invention is to form a peripheral wall that surrounds the entire periphery at the peripheral edge of the upper surface of one substrate, and to form a plurality of positioning holes in the peripheral wall, so that each positioning hole has a peripheral wall.
  • the external force also inserts and fixes the fiber collimator, and an optical element is disposed on the upper surface of the substrate on the inner side of the peripheral wall so that light can be spatially transmitted between the plurality of fiber collimators via the optical element.
  • the connecting member is covered so as to apply force, and the lower surface of the connecting member is bonded and fixed to the upper surface of the optical element below the connecting member.
  • An optical module according to a twelfth aspect of the present invention is the optical module according to the eleventh aspect of the present invention, wherein the cover member seals the space on the substrate inside the peripheral wall to the upper end surface of the peripheral wall of the substrate. It is characterized by mounting and fixing.
  • An optical module according to a thirteenth invention is the optical module according to any one of the third, fourth, tenth, eleventh, and twelfth inventions, wherein the fiber collimator includes a core in the center and One end face of a coreless fiber made of a material having a uniform refractive index that is substantially the same as the core is joined to an end face of the optical fiber having a clad on the outer periphery, and the other end of the coreless fiber is joined on the optical axis of the optical fiber. It is characterized by having a collimator lens on the end face side.
  • An optical module according to a fourteenth aspect is the optical module according to the thirteenth aspect, wherein the fiber collimator includes an end of the optical fiber in which a coreless fiber is bonded to an end surface, and the collimator lens.
  • the glass tube of the fiber collimator configured as the single optical component is disposed in the positioning groove or in the positioning hole. It is characterized by.
  • An optical module according to a fifteenth aspect of the present invention is the optical module according to any one of the third, fourth, tenth, eleventh, twelfth, and fourteenth aspects, and is incident as a kind of the optical element.
  • Demultiplexing function that transmits only light of a specific wavelength band and reflects light of other wavelengths, and transmits light of a specific wavelength that is incident on one side and transmitted, and is incident and reflected from the other side.
  • a wavelength selection filter having a multiplexing function for multiplexing reflected light of wavelengths is provided!
  • a module according to a sixteenth aspect of the invention is the optical module according to the eighth aspect of the invention, wherein the core is provided on an end face of an optical fiber having a core at the center of the fiber collimator force and a clad at the outer periphery thereof. And one end face of a coreless fiber made of a material having the same and uniform refractive index is joined, and a collimator lens is disposed on the other end face side of the coreless fiber on the optical axis of the optical fiber.
  • a module according to a seventeenth aspect is the optical module according to the sixteenth aspect, wherein the fiber collimator includes: an end of the optical fiber in which a coreless fiber is bonded to an end surface; and the collimator lens. It is configured as a single optical component by being disposed in a glass tube, and the glass tube of the fiber collimator configured as the single optical component is disposed in the positioning groove or the positioning hole. And
  • a module according to an eighteenth aspect of the invention is the optical module according to the eighth aspect of the invention, which transmits only light in a specific wavelength band of incident wavelength multiplexed light as one type of the optical element.
  • Wavelength having a demultiplexing function that reflects light of other wavelengths and a multiplexing function that combines transmitted light of a specific wavelength that is incident on and transmitted through one surface and reflected light of another wavelength that is incident from and reflected from the other surface A selection filter is provided.
  • a module according to a nineteenth aspect of the invention is the optical module according to the thirteenth aspect of the invention, wherein as a kind of the optical element, only light in a specific wavelength band of incident wavelength multiplexed light is transmitted.
  • a demultiplexing function that reflects light of other wavelengths, and a multiplexing function that combines transmitted light of a specific wavelength incident on one side and transmitted and reflected light of other wavelengths incident and reflected from the other side;
  • a wavelength selective filter having the above is provided.
  • a module according to a twentieth aspect of the invention is the optical module according to the sixteenth aspect of the invention, and transmits only light in a specific wavelength band of incident wavelength multiplexed light as one type of the optical element. It has a demultiplexing function that reflects light of other wavelengths, and a multiplexing function that combines the transmitted light of a specific wavelength that is incident on one side and transmitted and the reflected light of another wavelength that is incident and reflected from the other side. An additional wavelength selection filter is provided.
  • a module according to a twenty-first aspect is the optical module according to the seventeenth aspect, wherein, as one type of the optical element, only light in a specific wavelength band is transmitted among incident wavelength multiplexed light. It has a demultiplexing function that reflects light of other wavelengths, and a multiplexing function that combines the transmitted light of a specific wavelength that is incident on one side and transmitted and the reflected light of another wavelength that is incident and reflected from the other side. An additional wavelength selection filter is provided.
  • connection member is covered so as to be applied to the upper surfaces of at least two or more optical components positioned and bonded to the upper surface of one substrate, and the lower surfaces of the connection members are respectively applied.
  • the upper surface of the optical component can be connected with a connecting member.
  • the optical components support each other via the connection member, and the inclination of the optical components bonded and fixed on the substrate can be suppressed.
  • the attachment strength of optical components can be increased by increasing the adhesive surface.
  • connection member since the connection member is covered so as to apply force to all the optical components, it is easy to cover the temperature and humidity simply by covering and bonding one connection member on the optical component. Dependence performance can be improved.
  • the optical transmission performance can be improved with the minimum measures. In other words, since the block-shaped optical element is simply bonded to the upper surface of the substrate, there is a possibility that tilting is likely to occur due to a change in the bonding surface, but the upper surface of the optical element is covered with a connection member and bonded. As a result, the tilt of the optical element can be effectively suppressed. Therefore, it is possible to prevent a decrease in performance due to temperature and humidity changes.
  • connection member is also put on the fiber collimator and bonded, the stability of the fiber collimator can be improved, and the performance can be further improved.
  • the upper surface of even one optical component can be reliably secured. Therefore, it is possible to suppress the inclination of the optical component accompanying the change in temperature and humidity. Therefore, the same effect as the first invention can be obtained.
  • connection member is placed on the member placement surface provided on the substrate, whereby the connection member is placed on the upper surface of the optical component and bonded, and the connection member is placed on the substrate. Therefore, the inclination of the optical component can be effectively suppressed by the stably supported connecting member. Therefore, the same effect as the first invention can be obtained.
  • the positioning groove is provided on the member mounting surface, and the fiber collimator is positioned in the positioning groove, so that the connection is placed on the member mounting surface and bonded.
  • the stability of the fiber collimator can be enhanced by the member.
  • the fiber collimator is inserted and fixed in the positioning hole provided in the peripheral wall of the box-shaped substrate, the optical element is arranged on the upper surface of the substrate, and two or more optical elements are arranged. Since the upper surface is constrained by the connecting member in the same manner as described above, the tilt of the optical element can be suppressed, and the performance can be stabilized. Further, as in the twelfth aspect, by placing and fixing the cover member on the upper end surface of the peripheral wall, the space on the substrate can be sealed, so that the moisture resistance can be further improved.
  • a combination of an optical fiber terminal and a collimator lens capable of reducing the optical axis deviation and realizing a sufficient return loss by arranging a coreless fiber at the tip.
  • Fiber collimator making it easy to connect between fiber collimators
  • highly efficient optical coupling can be obtained.
  • a fiber collimator is configured by arranging an optical fiber terminal and a collimator lens in a glass tube in advance, and then, it is used as a positioning groove or a positioning hole on the substrate. Since it is arranged, easy assembly is possible.
  • the wavelength selection filter is used as the optical element having a filter function
  • the optical wavelength demultiplexing device, the multiplexing device, or the optical wavelength multiplexing / demultiplexing It can be used as a device (optical add / drop device).
  • FIG. 1 is a diagram showing an optical module according to the first embodiment
  • FIG. 2 is a diagram showing an optical module as a base
  • FIG. 3 is a diagram showing a configuration of a fiber collimator used in the optical module.
  • 4 is the second embodiment
  • FIG. 5 is the third embodiment
  • FIG. 6 is the fourth embodiment
  • FIG. 7 is the optical module of the fifth embodiment
  • FIG. 8 is the sixth embodiment
  • FIG. 10 is a diagram showing an optical module according to an eighth embodiment
  • FIG. 11 is a diagram showing a ninth embodiment
  • FIG. 12 is a diagram showing each optical module according to the tenth embodiment.
  • the optical module B3 (corresponding to the example described in Patent Document 5) serving as the base B3 should be referred to FIG. I will explain.
  • the optical module B3 in FIG. 2 has a function of branching light of a specific wavelength to the outside through the optical fibers 1002 to 1006 with respect to the wavelength multiplexed light input from the optical fiber 1001, that is, a function as an optical branching device.
  • optical fiber 1002 an optical module having a function of multiplexing light of a specific wavelength input from L006 and outputting the light to optical fiber 1001, that is, a function as a multiplexing device.
  • a plurality of optical components are arranged on the upper surface of a single substrate 50, the plurality of optical components are positioned so that light is transmitted in space between them, and the lower surface of each optical component is then mounted on the substrate. Adhered to the upper surface of 50.
  • the fiber collimators 101 to 106 are incorporated into a plurality of positioning grooves 61 to 66 horizontally cut on the substrate 50, and the signal light is spatially transmitted between the fiber collimators 101 to 106. 50 as multiple optical elements
  • the wavelength selection filters 71 to 74, the optical path correction members 81 and 82, and the optical path correction members 91 and 92 are positioned and arranged, and the lower surfaces thereof are bonded and fixed on the substrate 50.
  • the fiber collimators 101 to 106 include a fiber terminal 110 and a collimating lens 120.
  • the fiber terminal 110 and the collimating lens 120 may be assembled in advance into a glass capillaries or the like so as to be made into a single product, and the glass capillaries may be arranged in the positioning grooves 61 to 66.
  • the substrate 50 used here has a shape obtained by cutting positioning grooves 61 to 66 in a glass substrate, and all the positioning grooves 61 to 66 are parallel to each other and arranged on the same plane, and in particular, the positioning grooves. 61 and positioning groove 62, positioning groove 63 and positioning groove 66 are on the same axis.
  • the optical axes of the fiber collimators 101 to 106 arranged in the positioning grooves 61 to 66 on both ends and the optical elements (wavelength selection filters 71 to 74, optical path correction) arranged in the center part are provided.
  • the notches are processed so that the centers of the working members 81 and 82 and the optical path correcting members 91 and 92) are aligned.
  • an optical element arrangement surface (optical element arrangement space) 51 having an upper surface recessed by one step from the left and right sides is secured at the center of the rectangular substrate 50 in plan view.
  • the fiber collimator arrangement surfaces 52 and 53 that are left slightly higher than the optical element arrangement surface 51 are secured.
  • the fiber collimator arrangement surfaces 52 and 53 on both sides are in the same plane, and the optical element arrangement surface 51 and the fiber collimator arrangement surfaces 52 and 53 are both formed as flat parallel planes.
  • V grooves are formed as positioning grooves 61 to 66 on the upper surfaces of the fiber collimator arrangement surfaces 52 and 53.
  • the positioning grooves 61 to 66 are sometimes referred to as V grooves 61 to 66.
  • the fiber collimators 101 to 106 used in FIGS. 1 and 2 have the same structure, for example, as shown in FIG. That is, the optical fiber terminal 110 constituting the fiber collimators 101 to 106 has a core 11 la at the center and a clad 11 lb at the outer periphery, a standard mode outer diameter of 125 m, and an arbitrary length single mode optical fiber ( One end face of a coreless fiber (CL F) 112 made of a material having the same uniform refractive index as the core 11 la is fusion-bonded to the end face of the SMF) 111, and the length of the coreless fiber 112 is set to 350 m.
  • CL F coreless fiber
  • the other end surface of the coreless fiber 112 is ground and polished at 0 ° with respect to the surface perpendicular to the optical axis of the optical fiber 111, and this is further removed from the outer surface that is generally used for mounting an optical module.
  • Diameter 1 Adhered and fixed through a single core ferrule 115 of 249 mm and provided with an antireflection film.
  • the dimensions of the optical fiber 111 and the ferrule 115 are not limited to the above.
  • the collimator lens 120 is arranged on the other end surface side of the coreless fiber 112 on the optical axis of the optical fiber terminal 110, whereby the fiber collimators 101 to 106 are configured.
  • the collimator lens 120 When the collimator lens 120 is used on the light output side (when placed immediately after the optical fiber terminal), it serves to convert the diffused light emitted from the optical fiber terminal 110 into parallel light. When used on the side (incident side) (when placed in front of the optical fiber terminal), it is a lens designed to serve to combine the light that has propagated in space with the optical fiber terminal 110. is there.
  • the collimator lens 120 in this case is a so-called drum lens in which the outer periphery of the ball lens is cut into a cylindrical shape, and the external difference between the optical fiber terminal 110 and the phenolic lens 115 is 2 m so that the optical axis is not displaced.
  • the lens is designed to have a lens eccentricity of 1 ⁇ m or less, a focal length of 2.6 mm, and an outer diameter of 1.249 mm.
  • the collimator lens 120 is not limited to a drum-type lens, and a spherical lens, an aspheric lens, a ball lens, and a lens obtained by subjecting the exit side end surface of the refractive index distribution lens to curved surface processing, at least parallel light. Any lens can be used as long as one surface that emits or is incident is not a plane perpendicular to the optical axis.
  • the wavelength selection filters 71 to 74 transmit a light having a specific wavelength in incident light and reflect a light having a different wavelength, and a light having a specific wavelength that is incident and transmitted from one side. From the face Each of the wavelength selection filters 71 to 74 multiplexes and demultiplexes different wavelengths.
  • These wavelength selective filters 71-74 have an optical multilayer film (e.g., dielectric multilayer film) formed on a transparent substrate such as glass resin, and the filter characteristics depend on the material and layer structure of the optical multilayer film. This is to make it possible to demonstrate.
  • An optical multilayer film generally has a structure in which materials having a low refractive index and materials having a high refractive index are alternately laminated.
  • wavelength selective filters 71-74 for example, have dimensions of 1.4 X 1.4 X 1. Omm, and transmit light of wavelengths 1511, 1531, 1551, and 1571 nm, respectively, and reflect light of other wavelengths.
  • WDM filter designed for. WDM finoleta is an ITU-T (International Telecommunication
  • the optical path correcting members 81 and 82 are parallel flat glass substrates having antireflection films on both surfaces, and the materials and dimensions are the same as those of the wavelength selection filters 71 to 74. For example, 1260 to 1675 nm An antireflection film designed for light having a wavelength of 1 is provided.
  • the optical path correcting members 81 and 82 are provided for the following reason. That is, for example, when a parallel plate wavelength selection filter 71 is obliquely inserted between the optical paths of the opposing fiber collimators 101 and 102, the light is displaced in parallel with the original optical axis depending on the thickness of the glass substrate. Occurs. This deviation can be returned to the original optical axis using the same glass substrate, and low-loss coupling can be easily maintained. Therefore, optical path correcting members 81 and 82 are provided in a pair with the wavelength selection filter 70.
  • the optical path correction members 91 and 92 are used for changing the optical path and correcting the optical axis deviation caused by the external accuracy of the parts and the optical axis deviation when passing through the parts. Therefore, it is preferable to use a mirror having a Gimbal mechanism and a mirror having an adjustment mechanism according to the mirror force.
  • a mirror with a gimbal mechanism is a mirror whose tilt can be adjusted with one point (normal center) of the mirror as the center of rotation.
  • a metal mirror such as aluminum or gold because of excellent reflectivity and durability.
  • a glass substrate of size 2 X 5 X 1 mm is used. Using mirrors with aluminum and magnesium fluoride films.
  • optical path correction members 91 and 92 wedge-shaped prisms that are formed only by reflecting mirrors may be used.
  • the optical path can be bent by refraction or total reflection, and both can correct the optical path.
  • This optical module B3 is designed to be used exclusively for either the optical wavelength demultiplexing device for 4 channels (ch) or the optical wavelength demultiplexing device. It can be manufactured by such a method.
  • first and second V grooves 61 and 62 and the third and sixth V grooves 63 and 66 are formed on the same axis and in parallel with each other.
  • a substrate 50 in which a fifth V-groove 65 is formed in parallel and a fourth V-groove 64 is formed in parallel with the second and sixth V-grooves 62 and 66 is prepared.
  • an optical element placement surface 51 is formed which is recessed by one step from the left and right collimator placement surfaces 52, 53.
  • the size of the substrate 50 is 40 X 14 X 3 mm, and three V grooves 61 to 66 in parallel are arranged in parallel on the collimator arrangement surfaces 52 and 53 with a width of 9 mm on the left and right sides, respectively. And cut to the same depth.
  • the central optical element placement surface 51 is surface ground to a width of 21 mm.
  • the optical fiber terminal 110 and the collimator lens 120 are arranged in the first and second V-grooves 61 and 62, respectively, and the positions thereof are adjusted. Fabricate fiber collimators 101 and 102.
  • the first wavelength selection filter 71 and the second fiber are arranged on the optical path between the first fiber collimator 101 and the second fiber collimator 102 at a predesigned angle.
  • an optical path correcting member 81 that corrects an optical path shift by the first wavelength selection filter 71 is disposed at an angle symmetrical to the first wavelength selection filter 71.
  • the third fiber collimator 103 is temporarily assembled by disposing the optical fiber terminal 110 and the collimator lens 120 in the third V groove 63 adjacent to the first V groove 61.
  • the fiber terminal 110 and the collimator lens 120 are arranged in the V groove 64 and the fourth fiber collimator 104 is temporarily assembled.
  • the second wavelength selection filter 72 is disposed at a point where the optical axis of the reflected light reflected by the first wavelength selection filter 71 and the extension line of the axis of the fourth V groove 64 intersect. The light reflected by the first wavelength selection filter 71 and the second wavelength selection filter 72 one after another is made incident on the fourth fiber collimator 104.
  • a mirror (optical path correction member) 91 is disposed in front of the third fiber collimator 103, and in this state, is reflected on the first fiber collimator 101 by the first wavelength selection filter 71 and the second fiber collimator 103.
  • Light having a wavelength that passes through the second wavelength selection filter 72 is input, reflected by the first wavelength selection filter 71, transmitted through the second wavelength selection filter 72, and passed through the mirror 91 to the third fiber collimator 103.
  • the position and orientation of the mirror 91 and the distance between the fiber terminal 110 constituting the third fiber collimator 103 and the collimator lens 120 are determined and fixed while observing the amount of light coupled to.
  • the third wavelength selection filter 73 is arranged at a predesigned angle, An optical path correction member 82 that corrects an optical path shift by the third wavelength selection filter 73 is provided between the wavelength selection filter 73 and the fourth fiber collimator 104 at an angle symmetrical to the third wavelength selection filter 73. Arrange in degrees.
  • the fiber end 110 and the collimator lens 120 are disposed in the fifth V-groove 65 to temporarily assemble the fifth fiber collimator 105, and the fiber end 110 and the collimator lens are disposed in the sixth V-groove 66. 120 is arranged, and the sixth fiber collimator 106 is temporarily assembled.
  • a fourth wavelength selection filter 74 is arranged at a point where the optical axis of the reflected light reflected by the third wavelength selection filter 73 and the extension line of the axis of the sixth V groove 66 intersect. The light reflected by the first wavelength selection filter 71, the second wavelength selection filter 72, the third wavelength selection filter 73, and the fourth wavelength selection filter 74 is incident on the fiber collimator 106 one after another.
  • first, second, third, and fourth wavelength selection filters 71, 72, 73, 74 are input to the first fiber collimator 101, and the wavelength selection filter 71, 72, 73, 74
  • the position and orientation of the fourth wavelength selection filter 74 and the optical fiber terminal 110 constituting the sixth fiber collimator 106 are observed while observing the amount of light that is sequentially reflected and coupled to the optical fiber terminal 110 of the sixth fiber collimator 106. Determine the distance of the collimator lens 120 and fix it.
  • a mirror (optical path correction member) 92 is disposed in front of the fifth fiber collimator 105, and in this state, the first, second, and third wavelength selection filters 71 are placed in the first fiber collimator 101. , 72, and 73 are input together, and light having a wavelength that passes through the fourth wavelength selection filter 74 is input, reflected by the first, second, and third wavelength selection filters 71, 72, and 73 one after another.
  • the position and orientation of the mirror 92 and the fifth fiber collimator 105 are configured by checking the amount of light that passes through the wavelength selection filter 7 4 and is coupled to the fifth fiber collimator 105 via the mirror 92. Determine the distance between the optical fiber terminal 110 and the collimator lens 120 and fix it. Thereby, the optical module B3 is completed.
  • an optical module having the number of channels exceeding the force 4ch described in the case of manufacturing the optical module B3 for 4ch can be easily manufactured by repeating the same procedure. . Further, when manufacturing an optical module for 2ch, it may be completed in the middle of the above steps.
  • This optical module B3 can be used as a multi-channel optical demultiplexer or optical multiplexer.
  • the multi-wavelength multiplexer / demultiplexer which was normally manufactured by connecting multiple 1-channel multiplexers / demultiplexers, is integrated on the same substrate with components such as collimators and wavelength selection filters. Because it is configured to transmit light between components in space, it is possible to easily obtain a small and low-loss optical wavelength multiplexer / demultiplexer with the minimum volume without using unnecessary components. Can do.
  • a fiber collimator comprising a combination of an optical fiber terminal and a collimator lens, which is capable of realizing a sufficient return loss while reducing the optical axis deviation by arranging a coreless fiber at the tip. Since 101 to 106 are used, assembly is easy, a high efficiency optical coupling can be obtained between each fiber collimator 101 to 106, and a plurality of optical multiplexers / demultiplexers suitable for obtaining a low loss optical multiplexer / demultiplexer can be obtained.
  • a channel-type optical module can be provided.
  • the first fiber collimator 101 is an input light collimator (In) for making wavelength multiplexed light transmitted from an external input optical transmission line 1001 incident on the wavelength selection filter 71 as an input light
  • the sixth fiber collimator 106 is a wavelength.
  • the output collimator (Out) for sending the light reflected by the selection filter 74 to the external output optical transmission line 1006 is used, and the other second to fifth fiber collimators 102 to 105 are used as the wavelength selection filters. It is used as a collimator (Drop) for branching light for extracting the light transmitted through 71 to 74 to the external transmission lines 1002 to 1005.
  • the function of sequentially demultiplexing the wavelength multiplexed light can be exhibited by the action of the wavelength selection filters 71 to 74.
  • the fiber terminal 110 of the first fiber collimator 101 of the wavelength multiplexed signal power including wavelengths 1511, 1531, 1551, 1571, and 1591 when input to the fiber terminal 110 of the first fiber collimator 101 of the wavelength multiplexed signal power including wavelengths 1511, 1531, 1551, 1571, and 1591, only the light of the wavelength of 1511nm is selected as the first wavelength.
  • the light passes through the filter 71 and is coupled to the optical fiber terminal 110 of the second fiber collimator 102 for branching.
  • light having other wavelengths 1531, 1551, 1571, and 1591 nm is reflected toward the second wavelength selection filter 72.
  • the second wavelength selection filter 72 only light having a wavelength of 153 lnm is transmitted and coupled to the optical fiber terminal 110 of the third fiber collimator 103 for branching. , 1571 and 1591 nm are reflected toward the third wavelength selection filter 74.
  • the third wavelength selection filter 73 only light having a wavelength of 155 lnm is transmitted and coupled to the optical fiber terminal 110 of the fourth fiber collimator 104 for branching, and light having other wavelengths of 1571 and 1591 nm. Is reflected toward the fourth wavelength selective filter 74.
  • the fourth wavelength selection filter 74 only light having a wavelength of 1571 nm is transmitted and coupled to the optical fiber terminal 110 of the fifth fiber collimator 105 for branching, and other light having a wavelength of 1591 nm is output. Is reflected toward the sixth fiber collimator 106. As a result, light of each wavelength is demultiplexed sequentially.
  • the optical module B31 of the present embodiment is an optical component (a frame that is already arranged on the substrate 50). Cover the plate-shaped connecting members 311, 312, 371, 381, 391 on the upper surface of the Aiba collimators 101 to 106, wavelength selection filters 71 to 74, optical path correction members 81 and 82, optical path correction members 91 and 92) By connecting and fixing the lower surfaces of the connecting members 311, 312, 371, 381, 391 to the upper surface of the lower optical component, the upper portions of the optical components are connected.
  • the connecting member 311 is connected to an optical fiber terminal 110 of each of the fiber collimators 101, 103, and 105 and an upper part of the collimator lens 120 (or an upper part of the stirrer if these are accommodated in the stirrer). Then, these parts are connected and fixed.
  • the connecting member 312 connects and fixes these six parts via an adhesive applied to the optical terminals 212, 214, 216 and the lenses 222, 224, 226.
  • the connecting member 312 is formed by applying an adhesive applied to the optical fiber terminal 110 of each fiber collimator 102, 104, 106 and the upper part of the collimator lens 120 (the upper part of the capillaries when these forces are accommodated in the capillaries). Connect and fix these parts through.
  • the connecting member 371 connects and fixes these four parts via an adhesive applied to the upper part of the optical wavelength filters 71, 72, 73, 74.
  • the connecting member 381 connects and fixes these two parts via an adhesive applied to the upper portions of the optical path correcting members 81 and 82.
  • the connecting part 3 91 connects and fixes these two parts via an adhesive applied to the upper parts of the optical path correction members 91 and 92.
  • connection braces 311, 312, 371, 381, and 39 low-expansion Nyrex glass (trade name of Corning Co.) is used, and the size is large enough to connect each component. For example, 5 X 5mn! ⁇ 10 x 10mm, thickness is about lmm, which is about the same as substrate 50.
  • the connecting members 311, 312, 371, 381, and 391 can be made of quartz, silicon, various types of glass resin, metal, or the like according to the material of the substrate 50. However, a material having a thermal expansion coefficient similar to that of the substrate 50 is used. In order to connect and fix these components, it is desirable to use an adhesive having a thermal expansion coefficient comparable to that of the substrate 50 and each optical component fixed. It is also possible to bond using solder or low melting glass instead of the adhesive.
  • the optical module B31 is used as an index to judge the stability of the optical module against temperature.
  • the amount of change in insertion loss for each wavelength channel when exposed to temperature changes from 40 ° C to + 85 ° C is used.
  • Figure 13 shows the optical module from 40 ° C to + 85 ° C when there is no connection component (connection member) (optical module B3) and when there is a connection component (optical module B31). This is a comparison of the amount of change in insertion loss for each wavelength channel when exposed to temperature changes.
  • the first fiber collimator 101 is used as an input port for signal light of a plurality of wavelengths
  • the second fiber collimator 102 is used as an output port for the first wavelength channel
  • the third fiber collimator 103 is used as a second wavelength channel.
  • FIG. 14 shows the change in insertion loss of each wavelength channel when the optical module B3 without connection parts is exposed to a high temperature and high humidity atmosphere at a temperature of 85 ° C. and a humidity of 85%.
  • the insertion loss gradually increases immediately after exposure to high temperature and high humidity due to component misalignment due to expansion due to moisture absorption or a decrease in adhesive strength. It can be seen that there is a 5dB degradation in insertion loss.
  • FIG. 15 shows a change in insertion loss of each wavelength channel in the case of the optical module B31 with connection parts attached as shown in FIG. This maintains the same insertion loss as before the test even after 300 hours at high temperature and high humidity.
  • Fig. 16 shows the result of measuring the amount of change in insertion loss due to temperature change for optical module B3 without connection components, and the connection components (connection members) only for the wavelength selection filter of optical module B3. If the cover is connected, it is further connected to the mirror (optical path correction member). The result of measuring the amount of change in insertion loss due to temperature change when connecting with a connecting member is shown.
  • Fig. 17 shows the case where there is no connection component, the case where only the wavelength selection filter and mirror (optical path correction member) are connected with the connection component (connection member), and the wavelength selection filter and mirror (optical path correction member).
  • Figure 3 shows the results of investigation of the amount of change in insertion loss due to temperature changes (when connecting the connection parts (connection members) to the fiber collimator).
  • connection members 311, 312, 371, 381, 391 are covered so as to apply force to the upper surfaces of two or more optical components, and the lower surfaces of the connection members 311, 312, 371, 381, 391 are respectively attached to the upper surfaces of the optical components
  • the top surfaces of the optical components can be connected to each other with a connecting member.
  • the optical components support each other via the connecting members 311, 312, 371, 381, 391, and the inclination of the optical components bonded and fixed on the substrate 50 can be suppressed.
  • the attachment strength of optical components can be increased by increasing the adhesive surface.
  • block-shaped optical elements (wavelength selection filters 71 to 74, optical path correction members 81 and 82, optical path correction members 91 and 92) interposed between the fiber collimators 101 to 106 are simply provided on the substrate 50. Since it is only adhered to the upper surface, there is a possibility that tilting is likely to occur due to changes in the adhesion surface, but by attaching the connection members 371, 381, 391 on the upper surface of those optical elements, The tilt of the optical element can be effectively suppressed. Therefore, hot and humid It is possible to prevent a decrease in performance due to the change in the degree. Further, since the connection members 311 and 312 are also put on and bonded to the fiber collimator 101 to LO 6, the stability of the fiber collimators 101 to 106 can be improved, and further performance improvement can be achieved. .
  • connection member 321 shows that all optical components (fiber collimators 101 to 106, wavelength selection filters 71 to 74, optical path correction members 81 and 82, optical path correction members 91 and 92) on the substrate 50 are connected by the connection member 321.
  • connection member 321 when the connection member 321 is covered so as to cover all the optical components, it is possible to easily depend on temperature and humidity simply by covering and bonding one connection member 321 on the optical component. Improvements can be made.
  • FIG. 5 shows that optical components (fiber collimators 101 to 106, wavelength selection filters 71 to 74, optical path correction members 81 and 82, optical path correction members 91 and 92) on the substrate 50 and the substrate 50 are connected by a connecting member 325. It is an example of optical module B33.
  • the collimator arrangement surfaces 52 and 53 of the substrate 50 have deep positioning grooves 61 to 66 as compared to the first embodiment, and the collimator arrangement surfaces 52 and 53 on both sides are arranged.
  • the optical element mounted on the surface 51 (each wavelength selection filter 71 to 74, optical path correction members 81 and 82, optical path correction members 91 and 92) is designed to have the same height as the upper surface of the connection member 325. It is a surface.
  • the connecting member 325 is placed on the upper surfaces of the collimator arrangement surfaces 52 and 53, so that all optical components (fiber collimators 101 to 106, wavelength selection filters 71 to 74, and optical path correction on the same substrate 50 are provided.
  • the upper surfaces of the members 81 and 82 and the optical path correcting members 91 and 92) and the substrate 50 are connected via an adhesive.
  • connection member 325 since the reliable placement surface (collimator placement surfaces 52, 53) of the connection member 325 is set on the substrate 50, the inclination of the optical component can be reduced by the stably supported connection member 325. Yo Can be effectively suppressed.
  • FIG. 6 shows an example in which a box-shaped housing 55 having positioning holes 61H to 66H in the side wall (peripheral wall 54) is used instead of using the substrate 50 having the positioning groove cut on the upper surface as described above. is there.
  • the box-shaped housing 55 is formed by forming a peripheral wall 54 that surrounds the entire periphery at the peripheral edge of the upper surface of one substrate 50A, and a plurality of positioning holes 61H to 66H formed through the peripheral wall 54. I can think of it.
  • the positioning holes 61H to 66H correspond to the positioning grooves 61 to 66 in FIG. 1, and the upper surface of the substrate 50A inside the peripheral wall 54 is the optical element placement surface 51.
  • the fiber collimators 101 to 106 are inserted and fixed in the positioning holes 61H to 66H, and the wavelength selection filters 71 to 74, the optical path correction members 81 and 82, and the optical path correction members 91 and 92 are disposed on the optical element placement surface 51. After being mounted and positioned, it is bonded and fixed.
  • the optical elements wavelength selection filters 71 to 74, optical path correction members 81 and 82, optical path correction members 91 and 92 mounted on the optical element arrangement surface 51, the same as in the first embodiment Further, the upper parts of two or more optical components are connected by covering and bonding the connecting members 371, 381, and 391. In addition, when the entire assembly is completed, the upper surface opening of the housing 55 is sealed with the cover material 59! /.
  • the tilt of the optical element on the substrate 50A (the bottom plate of the casing 55) can be suppressed, and the performance can be stabilized. Further, by sealing with the cover material 59, it is possible to further improve the moisture resistance performance.
  • an optical element arrangement surface 51 is arranged at the center of the upper surface of the substrate 50, and collimator arrangement surfaces 52, 5 3 each having one positioning groove 61, 62 on each side thereof.
  • the fiber collimators 101 and 102 are disposed in the positioning grooves 61 and 62 so as to face each other in the axial direction, and the optical element 70 is disposed on the optical element disposition surface 51, whereby the fiber collimators 101 and 102.
  • the light is configured to be spatially transmitted through the optical element 70.
  • the lower surfaces of the fiber collimators 101 and 102 are bonded and fixed to the positioning grooves 61 and 62, and the lower surface of the optical element 70 is bonded and fixed to the upper surface of the substrate 50.
  • the optical element 70 for example, a gain equivalent filter or the like is arranged, so that this optical module A1 has a gain using the first fiber collimator 101 as an input port and the second fiber collimator 102 as an output port. Functions as an equalizer.
  • the gate-shaped support member 40 having the column member 401 and the beam member 402 as shown in (b) or (c) is disposed on the substrate 50, and the support is provided.
  • the bottom surface of the pillar member 401 of the member 400 is bonded and fixed to the top surface of the substrate 50, and the beam member 402 of the support member 400 is placed on the top surface of the optical element 70, and the bottom surface of the beam member 402 is placed on the top surface of the optical element 70.
  • the stability of the optical element 70 is enhanced by attaching and fixing.
  • the gate-shaped support member 400 on the substrate 50, the upper surface of even one optical element 70 can be reliably restrained. Therefore, the inclination of the optical element 70 accompanying the change in temperature and humidity can be suppressed, and the same effect as described above can be achieved.
  • the column member 401 and the beam member 402 are configured as separate parts in advance, and the lower surface of the column member 401 is bonded and fixed to the upper surface of the substrate 50.
  • a type in which the upper surface of the pillar member 401 and the upper surface of the optical element 70 are covered with a beam member 402 may be used, and as shown in FIG.
  • the beam member 402 is configured as an integral part in advance, and the lower surface of the column member 401 is bonded and fixed to the upper surface of the substrate 50, and at the same time, the beam member 402 is covered and bonded to the upper surface of the optical element 70. May be used.
  • the force shown in the case of using the gate-shaped support member 400 is used. Even if an inverted L-shaped support member made up of one column member 401 and one beam member 402 is used. Good.
  • the column member 401 of the support member 400 is a component having the same size as that of the optical element 70 and is preferably made of a material having a coefficient of thermal expansion similar to that of the optical element 70.
  • the configuration and material of the target optical module and the shape and material of the support member 400 can be arbitrarily selected.
  • FIG. 8 shows an optical module A2 of the sixth embodiment.
  • an optical path correcting member 80 is further arranged behind the optical element 70 of the fifth embodiment of FIG.
  • the upper surfaces of the components are connected by a connection member 410 similar to that of the first embodiment.
  • FIG. 9 is a view showing an optical module B11 of the seventh embodiment.
  • This optical module B11 is an optical module for use as an lch multiplexing or demultiplexing device.
  • Three optical elements 71, 81, 91 are arranged on a substrate 50, and the top surface thereof is the first one.
  • the connection member 410 is the same as that in the embodiment.
  • FIG. 10 is a diagram showing an optical module B21 according to the eighth embodiment.
  • This optical module B21 is an optical module for use as a 2-channel multiplexing or demultiplexing device.
  • Four optical elements 71, 72, 81, 91 are arranged on a substrate 50, and the upper surface thereof is the first one.
  • the connection member 410 is the same as that in the first embodiment.
  • FIG. 11 is a view showing an optical module D11 of the ninth embodiment.
  • This optical module D11 is an optical module for use as an lch multiplexer / demultiplexer.
  • Four optical elements 71 and 81 are arranged on a substrate 50, and the upper surface thereof is connected in the same manner as in the first embodiment. Connected with member 410.
  • FIG. 12 shows an optical module D21 according to the tenth embodiment.
  • This optical module D2 1 is an optical module for use as a 2-channel multiplexer / demultiplexer.
  • Eight optical elements 71, 72, 81, 82 are arranged on the substrate 50, and the upper surface thereof is used for the first implementation. It is connected by a connecting member 410 similar to the form.
  • FIG. 19 shows an optical module B33 of the eleventh embodiment.
  • the optical module B33 according to this embodiment is an example in which the optical module B32 (see FIG. 4) itself that works according to the above-described second embodiment is used as a connecting member instead of using a simple plate-like body. That is, first, as the base optical module, the optical module B3 (see FIG. 2) used as the base optical module in the first embodiment described above is used. All optical components (fiber collimators 101 to 106, wavelength selection filters 71 to 74, optical path correction members 81 and 82, optical path correction members 91 and 92) on the substrate 50 in this optical module B3 are connected to the optical module B32. The connection is made at the bottom of the board 50 (see Fig. 4).
  • an already assembled optical module is applied so that all optical components of the base optical module B3 (see Fig. 2) can be used.
  • the bottom surface of the substrate 50 in this optical module B32 is adhered and fixed to the top surfaces of all the optical components below it.
  • the upper surface of the optical component to be mounted is connected by the connecting member, so that reliability such as temperature stability and moisture resistance can be very easily achieved. Can be improved. Therefore, it is possible to adopt an easier and cheaper outer casing while maintaining high reliability, and it is possible to provide a small, low-loss and highly reliable optical module at a low price.
  • FIG. 1 is a diagram showing a configuration of an optical module according to a first embodiment of the present invention, where (a) is a plan view and (b) is a side view.
  • FIG. 2 shows an optical module serving as a base of the first embodiment of the present invention, where (a) is a plan view and (b) is a side view.
  • FIG. 3 is a diagram showing a configuration of a fiber collimator used in the optical module.
  • FIG. 4 is a diagram showing a configuration of an optical module according to a second embodiment of the present invention, where (a) is a plan view and (b) is a side view.
  • FIG. 5 is a diagram showing a configuration of an optical module according to a third embodiment of the present invention, where (a) is a plan view, (b) is a side view, and (c) is a view taken along the line Vc—Vc of (a). is there.
  • FIG. 6 is a diagram showing a configuration of an optical module according to a fourth embodiment of the present invention, where (a) is a plan view and (b) is a side sectional view.
  • FIG. 7 is a diagram showing a configuration of an optical module according to a fifth embodiment of the present invention, where (a) is a plan view, (b) is a perspective view showing a first example of a support member, and (c) is a diagram of the support member.
  • FIG. 6 is a perspective view showing a second example.
  • FIG. 8 is a diagram showing a configuration of an optical module according to a sixth embodiment of the present invention, where (a) is a plan view and (b) is a side view.
  • FIG. 9 is a diagram showing a configuration of an optical module according to a seventh embodiment of the present invention, where (a) is a plan view and (b) is a side view.
  • FIG. 10 is a diagram showing a configuration of an optical module according to an eighth embodiment of the present invention, where (a) is a plan view and (b) is a side view.
  • FIG. 11 is a diagram showing a configuration of an optical module according to a ninth embodiment of the present invention, where (a) is a plan view and (b) is a side view.
  • FIG. 12 is a diagram showing a configuration of an optical module according to a tenth embodiment of the present invention, in which (a) is a plan view and (b) is a side view.
  • FIG. 13 is a characteristic comparison diagram of the optical module of the first embodiment of FIG. 1 and the optical module of FIG.
  • FIG. 14 is a characteristic diagram of the optical module of FIG.
  • FIG. 15 is a characteristic diagram of the optical module in FIG. 1.
  • 16 is a performance comparison diagram according to the presence or absence of a connection member in the first embodiment of FIG.
  • FIG. 17 is still another comparative view of performance depending on the presence or absence of the connecting member in the first embodiment of FIG.
  • FIG. 18 is a diagram showing an example of a conventional optical add / drop multiplexer.
  • FIG. 19 is a diagram showing a configuration of an optical module according to an eleventh embodiment of the present invention, in which (a) is a plan view and (b) is a side view.

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Abstract

Cette invention porte sur un module optique à montage en surface dont la fiabilité face à des changements de température et d'humidité est facilement améliorée à faible coût. Des collimateurs à fibre (101-106) sont respectivement disposés sur une pluralité de rainures de positionnement (61-66) formées sur la surface supérieure d'un substrat commun (50). Une pluralité d'éléments optiques en forme de bloc (filtres de sélection de longueur d'onde (71-74), éléments de correction de trajet optique (81, 82) et organes correcteurs de trajet optique (91, 92)) sont disposés sur la surface supérieure du substrat, de telle sorte que la lumière se transmet dans les espaces entre les collimateurs à fibre à travers les éléments optiques eux-mêmes. Les surfaces supérieures des éléments optiques et des collimateurs à fibre sont recouvertes d'éléments de connexion (311, 312, 371, 381, 391), et les surfaces inférieures des éléments de connexion sont amenées à adhérer et à être fixées sur les surfaces supérieures des composants optiques en dessous.
PCT/JP2006/318788 2006-09-21 2006-09-21 Module optique WO2008035430A1 (fr)

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JP2017090741A (ja) * 2015-11-12 2017-05-25 日本電気硝子株式会社 光学部品ユニット
CN114815027A (zh) * 2021-01-29 2022-07-29 波若威科技股份有限公司 光学装置

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Publication number Priority date Publication date Assignee Title
JP2015210529A (ja) * 2014-04-24 2015-11-24 ジートラン インコーポレイテッド 波長分割マルチプレクサ（ｗｄｍ）およびデマルチプレクサ（ｗｄｄｍ）
JP2017090741A (ja) * 2015-11-12 2017-05-25 日本電気硝子株式会社 光学部品ユニット
CN114815027A (zh) * 2021-01-29 2022-07-29 波若威科技股份有限公司 光学装置
CN114815027B (zh) * 2021-01-29 2024-06-25 波若威科技股份有限公司 光学装置

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