WO2005006043A1 - モニタリング装置 - Google Patents
モニタリング装置 Download PDFInfo
- Publication number
- WO2005006043A1 WO2005006043A1 PCT/JP2004/009933 JP2004009933W WO2005006043A1 WO 2005006043 A1 WO2005006043 A1 WO 2005006043A1 JP 2004009933 W JP2004009933 W JP 2004009933W WO 2005006043 A1 WO2005006043 A1 WO 2005006043A1
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- WIPO (PCT)
- Prior art keywords
- light
- monitoring device
- signal light
- prism
- optical transmission
- Prior art date
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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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
-
- 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
- G02B6/34—Optical coupling means utilising prism or grating
Definitions
- the present invention relates to a monitoring device for detecting a light amount in the field of optical communication.
- FIG. 1 is a schematic diagram illustrating a light amount monitoring method used in an optical transmission device of a conventional example (Patent Document 1).
- a laser beam 2 emitted from a semiconductor laser 1 is made incident on an optical transmission line 3 bent in a substantially S-shape from an end face, and radiated from a bent portion 3a of the optical transmission line 3.
- the received light is received by the light receiving element 4 at a fixed ratio (for example, several percent), and the amount of light emitted from the semiconductor laser 1 or the amount of light propagated through the optical transmission path 3 is calculated based on the amount of light received by the light receiving element 4. I have.
- FIG. 2 is a schematic diagram showing another conventional example (Patent Document 2).
- Patent Document 2 two optical fibers 5 and 6 are arranged in parallel, and the end faces of both optical fibers 5 and 6 are inclined toward opposite sides.
- a meniscus lens 7 having a concave surface facing the optical fibers 5 and 6 is disposed at a position facing the end faces of the optical fibers 5 and 6.
- the concave surface of the meniscus lens 7 is provided with a branching filter 8 that transmits part (for example, several percent) of light and reflects most of the light.
- an optical fiber 9 for monitoring is arranged on the convex side of the meniscus lens 7.
- the signal light L emitted from the core of the optical fiber 5 is refracted by the inclination of the end face, emitted obliquely upward and rightward, and made incident on the meniscus lens 7.
- Most of the signal light L incident on the meniscus lens 7 is reflected obliquely upward and leftward by the branching filter 8 and enters the core of the optical fiber 6. That is, most of the light propagating through the optical fiber 5 is coupled to the optical fiber 6 via the meniscus lens 7.
- Patent Document 1 JP-A-2000-171662
- Patent Document 2 JP-A-10-170750
- the present invention has been made in view of the above technical problems, and it is an object of the present invention to be able to accurately extract monitor light, to have a simple structure, and to reduce the size. It is to provide a possible monitoring device.
- a monitoring device is a monitoring device for detecting the amount of signal light propagating through an optical transmission line, wherein at least the ends are kept substantially parallel, and two sets constitute a set.
- the optical transmission line has two interfaces that are orthogonal to each other, and the signal light is reflected twice at the two interfaces so that the incoming signal light is returned toward the original incident direction.
- Signal light emitted from the end face of one of the pair of optical transmission paths is made incident on the prism, and the signal light is reflected twice at two interfaces of the prism.
- the optical transmission path includes an optical fiber, an optical waveguide, and the like.
- the monitoring device of the present invention only a predetermined ratio of signal light is leaked from the prism. Therefore, if the amount of light leaked from the prism is measured, the original signal is obtained from the predetermined ratio and the measured light amount.
- the amount of light can be known.
- the monitoring device since the monitoring device has a simple configuration including an optical waveguide and a prism, it can be manufactured at low cost using a commercially available prism or the like. In addition, since it has a simple configuration, it is easy to assemble, and the monitoring device can be downsized.
- An embodiment of the present invention is characterized by comprising a light receiving means for receiving the signal light leaked from the interface.
- the light receiving means includes a light receiving element such as a photodiode, a light receiving element array, and the like.
- the light receiving unit is positioned with reference to an interface of the prism through which signal light leaks.
- the light receiving means for measuring the amount of signal light leaking from the prism may be provided outside the monitoring device.
- the monitoring device can be downsized. Further, if the light receiving means is positioned with reference to the interface where the signal light leaks from the prism, the accuracy of measuring the amount of light by the light receiving means can be stabilized and the measurement accuracy can be improved.
- Another embodiment of the present invention is a line segment that bisects the included angle between the two orthogonal interfaces when viewed from a direction perpendicular to a plane orthogonal to the two orthogonal interfaces of the prism. Is tilted from the direction parallel to the optical axis direction at the end of the optical transmission path, and is tilted.
- the two orthogonal interfaces are used as a method of leaking a part of the signal light from the prism.
- a line segment bisecting the included angle is inclined in a direction parallel to the optical axis direction at the end of the optical transmission path. Therefore, the signal light enters at an incident angle smaller than the critical angle of total reflection at one interface, and a part of the signal light leaks from the interface. Become like Therefore, according to this embodiment, it is possible to easily adjust the ratio of the amount of leakage simply by adjusting the angle of the prism.
- a filter for leaking a part of incident light to the outside of the light transmitting medium is formed on at least one of the two interfaces of the prism.
- a part of the incident light is directed to at least one of two interfaces of the prism to the outside of the light transmitting medium. Since a filter for leaking is formed, there is no need to adjust the amount of leak by adjusting the angle of the prism, and no assembly adjustment is required.
- Yet another embodiment of the present invention is characterized in that a deflecting unit for changing the emission direction of the signal light leaked from the interface of the prism is provided.
- the restriction on the installation position of the light receiving means can be reduced, and the degree of freedom in design is improved. I do.
- a plurality of sets of two optical transmission paths are provided, and these optical transmission paths are arranged in a plane orthogonal to two mutually orthogonal interfaces of the prism. It is characterized by being arranged in a row in parallel with.
- each set of two optical transmission paths is orthogonal to each other of the prism. It is characterized by being arranged in parallel with a plane perpendicular to two interfaces.
- these optical transmission lines are connected to two orthogonal interfaces of the prism.
- the two sets of optical transmission lines that can be arranged in a row in parallel with the plane orthogonal to the prism are each arranged in parallel to the plane orthogonal to the two interfaces that are orthogonal to each other. Good. According to these structures, the amount of signal light propagated through a plurality of sets of optical transmission lines can be monitored at once.
- FIG. 1 is a schematic diagram illustrating a method for monitoring the amount of light according to a conventional example.
- FIG. 2 is a schematic diagram illustrating a method for monitoring the amount of light according to another conventional example.
- FIG. 3 is a schematic perspective view of a monitoring device according to Embodiment 1 of the present invention.
- FIG. 4 is a side view of the monitoring device of the above.
- FIG. 5 is a cross-sectional view for explaining the operation of the monitoring device.
- FIG. 6 (a) is a diagram illustrating an operation of a lens
- FIG. 6 (b) is a diagram illustrating an operation of a different lens.
- FIG. 7 (a), (b), and (c) are schematic cross-sectional views illustrating a method of adjusting the monitoring device of FIG.
- FIG. 8 is a cross-sectional view illustrating different adjustment states of the monitoring device of FIG. 3.
- FIG. 9 is a schematic perspective view of a monitoring device according to Embodiment 2 of the present invention.
- FIG. 10 (a) is a schematic sectional view showing a state before adjustment of the monitoring device, and (b) is a schematic sectional view showing a state after adjustment.
- FIG. 11 is a perspective view of a monitoring device according to Embodiment 3 of the present invention.
- FIG. 12 is a plan view of the monitoring device of the above.
- FIG. 13 is a perspective view of a monitoring device according to Embodiment 4 of the present invention.
- FIG. 14 is a cross-sectional view for explaining the operation of the monitoring device of the above.
- FIG. 15 is a schematic sectional view of a triangular prism and a deflecting prism in the monitoring device of FIG.
- FIG. 16 is a perspective view of a monitoring device according to Embodiment 5 of the present invention.
- FIG. 17 (a) is a cross-sectional view at the position of the upper optical fiber in the monitoring device of the above
- FIG. 17 (b) is a cross-sectional view at the position of the lower optical fiber of the monitoring device of the same.
- FIG. 18 (a) is a sectional view showing a state before adjustment of the monitoring device of FIG. 16, and FIG. 18 (b) is a sectional view showing a state after adjustment.
- FIG. 19 is a perspective view of a monitoring device according to Embodiment 6 of the present invention.
- FIG. 20 is an enlarged sectional view of the monitoring device of the above.
- FIG. 21 is a perspective view of a monitoring device according to Embodiment 7 of the present invention.
- FIG. 22 is an enlarged cross-sectional view of the monitoring device of the above.
- FIG. 23 is a perspective view of a monitoring device according to Embodiment 8 of the present invention.
- FIG. 24 is a cross-sectional view of the monitoring device of the above.
- FIG. 25 is a perspective view of a monitoring device according to Embodiment 9 of the present invention.
- FIG. 26 is a sectional view of the monitoring device of the above.
- FIG. 3 is a perspective view showing the structure of the monitoring device 11 according to the first embodiment of the present invention
- FIG. 4 is a side view thereof
- FIG. 5 is a schematic cross-sectional view for explaining its operation (the prism is exaggerated and enlarged). Drawing ing. ).
- the monitoring device 11 mainly includes a two-core optical fiber array 12 and a triangular prism 13.
- the two optical fibers 14 and 15 are held by a holder 16 with their ends S aligned.
- two optical fibers 14, 15 are positioned at a predetermined pitch and held in parallel.
- the optical fibers 14 and 15 both constitute an optical communication line, and optical signals are transmitted here.
- a lens array 17 is attached to a tip end surface of the optical fiber array 12.
- the lens array 17 has a structure in which two lenses 19 made of a spherical lens or an aspherical lens are provided on the surface of a substrate 18 made of a transparent resin or glass.
- the lens array 17 has optical fibers 14 and 15. The optical axis of the core is adjusted so that the optical axis of each lens and the optical axis of each lens 19 coincide with each other, and then fixed to the distal end surface of the optical fiber array 12.
- the triangular prism 13 is a prism having a right-angled isosceles triangle in plan view, and a commercially available product such as a glass product can be used.
- the triangular prism 13 has two surfaces orthogonal to each other (the surfaces are referred to as reflection surfaces 20 and 21) and a surface that forms an angle of 45 degrees with respect to the reflection surfaces 20 and 21 (this surface is referred to as an input / output surface 22). ).
- the triangular prism 13 is arranged in front of the optical fiber array 12 so that the input / output surface 22 faces the lens array 17.
- One reflecting surface 20 is located on the extension of the optical fiber 14 and the other reflecting surface
- the surface 21 is located on the extension of the optical fiber 15.
- the optical fiber array 12 is fixed to the casing 23 of the monitoring device 11 or a base 23 such as a circuit board by means of bonding or screwing before the triangular prism 13.
- the triangular prism 13 is fixed to the base 23 using a fixing means such as an adhesive or a screw after performing an angle adjustment and a position adjustment as described later.
- the triangular prism 13 when the triangular prism 13 is fixed by adjusting the angle and the position, the triangular prism 13 is at a predetermined angle with respect to the optical fiber array 12 as shown in FIG. It is inclined, and the front surface of the lens array 17 and the entrance / exit surface 22 of the triangular prism 13 are non-parallel.
- the signal light L When the signal light L is emitted from one optical fiber 14 of the optical fiber array 12, the signal light L is collimated by the lens 19, and then enters the triangular prism 13 from the entrance / exit surface 22. Incident.
- the signal light L incident on the triangular prism 13 The incident angle ⁇ 1 (incident angle measured from the normal N 1 on the reflecting surface 20) larger than the critical angle ⁇ c of the total reflection at the interface of the triangular prism 13, And is totally reflected.
- the signal light totally reflected by the reflection surface 20 enters the other reflection surface 21.
- the incident angle ⁇ 2 of the light incident on the reflecting surface 21 (the incident angle measured from the normal N2 on the reflecting surface 21) is slightly smaller than the critical angle ⁇ c of the total reflection at the triangular prism 13 interface. It is getting smaller. Therefore, the signal light having a predetermined ratio ⁇ : (k 1) of the signal light incident on the reflection surface 21 leaks from the reflection surface 21 to the outside. The signal light L is reflected by the reflection surface 21 at the remaining ratio (l_ / c) and returns to the lens array 17 side. The signal light L returned to the lens array 17 is collected by the lens 19 and coupled to the core of the optical fiber 15.
- the light amount of light leaking from the reflecting surface 21 of the triangular prism 13 is measured using a light receiving element such as a photodiode, the light amount of the signal light L propagating through the optical fiber 14 or the optical fiber 15 is obtained. You can know. In other words, if the result of measuring the amount of light leaked from the reflection surface 21 of the triangular prism 13 with the light receiving element is Pmoni, the amount of the signal light L propagating in the optical fiber 14 is Pmoni.
- the amount of the signal light L propagating in the optical fiber 15 is
- FIGS. 6 (a) and 6 (b) are diagrams showing the function of the lens 19 provided in the lens array 17 (the prism is exaggerated and enlarged).
- the signal light L emitted from the core of the optical fiber 14 is converted into parallel light by the lens 19, enters the triangular prism 13 as parallel light, and enters the reflecting surface.
- the parallel light reflected twice at 20, 21 and emitted from the entrance / exit surface 22 in the original direction is collected by the lens 19 and coupled to the core end surface of the optical fiber 15
- the signal light L emitted from the core of the optical fiber 14 is condensed by the lens 19, enters the triangular prism 13 while condensing, and is reflected.
- the light is reflected by the surface 20 and becomes a diffused light after being condensed at one point at the center between the reflective surfaces 20 and 21.
- the diffused light is reflected by the reflective surface 21 and emitted from the entrance / exit surface 22 in the original direction.
- Light is collected by lens 19 Then, the optical fiber 15 is coupled to the core end face.
- any of the method of Fig. 6 (a) and the method of Fig. 6 (b) may be used, but the method of Fig. 6 (b) is adopted. It is desirable that the light receiving element receive the light at a distance where the leaked light La leaked from the reflecting surface 21 does not spread much (at least the diameter of the light beam cross section is smaller than the diameter of the lens).
- FIGS. 7 (a), 7 (b) and 7 (c) are diagrams for explaining a method of adjusting the triangular prism 13 in the monitoring device 11 of the present invention.
- a triangular prism 13 is arranged in front of the optical fiber array 12 so that the lens array 17 and the input / output surface 22 of the triangular prism 13 are parallel to each other.
- the signal light L emitted from the optical fiber 14 is arranged such that it is totally reflected twice by the reflecting surfaces 20 and 21 of the triangular prism 13, returns to the original direction, and enters the optical fiber 15.
- the signal light L having a known light amount Po is emitted from the optical fiber 14, and the triangular prism 13 is rotated in the R direction to allow a part of the signal light L to leak from the reflection surface 21 of the triangular prism 13.
- the incident angle of the signal light L incident on the reflection surface 20 increases, so that the signal light L is totally reflected by the reflection surface 20 and then incident on the reflection surface 21.
- the triangular prism 13 rotates in the R direction the angle of incidence on the reflecting surface 21 decreases, and when the angle of incidence falls below the critical angle of total reflection at the interface of the triangular prism 13, the inclination of the triangular prism 13 increases.
- the triangular prism 13 When the angle of the triangular prism 13 is adjusted so that the ratio / of the leaked light La becomes a predetermined value, the triangular prism 13 is moved in the S direction perpendicular to the optical fibers 14 and 15 while keeping the inclination of the triangular prism 13 unchanged. The triangular prism 13 is moved in parallel and the position of the triangular prism 13 is determined at a position where the amount of the signal light L incident on the optical fiber 15 becomes maximum, as shown in FIG. When the optimum position of the triangular prism 13 is determined in this way, the triangular prism 13 is fixed to the base 23 or the like with an adhesive such as an ultraviolet curable adhesive, or is fixed with a fastener such as a screw.
- an adhesive such as an ultraviolet curable adhesive
- Each of the light amount monitoring devices 11 may adjust the triangular prism 13 one by one as described above. However, for example, at the start of a lot, the first monitoring device 11 is adjusted as described above and the triangular prism 13 is adjusted. The position and the angle of the prism 13 are determined, and then the triangular prism 13 may be attached to the position and the angle of the monitoring device 11 by an assembling machine without performing the adjustment operation one by one.
- the light receiving element 24 may be provided outside the monitoring device 11 or may be configured as a part of the monitoring device 11. When the light receiving element 24 is pre-installed as part of the monitoring device 11, the light receiving element 24 should be fixed to the base 23 or the like after adjusting the position and angle at which the above-mentioned leaked light La can be efficiently received. Good.
- the two optical fibers 14 and 15 are arranged in parallel and only the triangular prism 13 needs to be arranged on the end face side, miniaturization is easily achieved. That can be S. Further, the ratio of the leakage light La can be precisely controlled by adjusting the rotation angle of the triangular prism 13. Further, the emission direction of the leakage light La can be easily controlled, and the light receiving element 24 can reliably receive the light.
- the signal light L is totally reflected by the first reflecting surface 20, and a part of the signal light L is reflected from the reflecting surface 21 by the second reflecting surface 21. It was leaking.
- FIG. 8 the prism is exaggerated and enlarged
- the first reflection surface 20 can be obtained.
- a part of the signal light L leaks from the reflection surface 20, and the signal light L can be totally reflected by the second reflection surface 21.
- FIG. 9 is a perspective view showing a structure of a monitoring device 31 according to Embodiment 2 of the present invention.
- a multi-core optical fiber array 12 is used.
- the optical fiber array 12 holds a large number of optical fibers 14a, 14b,..., 15b, 15a such as eight and twelve, and holds the ends thereof in parallel.
- the lens array 17 is also provided with a large number of lenses 19 such as 8, 12 or the like corresponding to the optical fibers 14a, 14b,..., 15b, 15a.
- the triangular prism 13 corresponds to each of the optical filters 14a, 14b,. The corresponding size is used. In the following, it is assumed that the number of optical fibers is eight.
- the signal light L emitted from the optical fiber 14a is collimated by the lens 19, enters the triangular prism 13, and enters the reflecting surface.
- the light is totally reflected twice at 20 and 21 and enters the lens 19 from the triangular prism 13.
- the light is condensed by the lens 19 and coupled to the optical fiber 15 a.
- the signal lights L emitted parallel to each other from the optical fibers 14b, 14c, and 14d pass through the lens 19, are totally reflected twice by the reflecting surfaces 20, 21 of the triangular prism 13, and return to the lens 19. Are coupled to optical fibers 15b, 15c and 15d, respectively.
- the light is emitted from any of the optical fibers 14a, 14b, 14c, and 14d as shown in FIG. Since the reflected signal light L is incident on the reflecting surface 21 at the same angle and the incident angle, the shifted and shifted signal light L leaks from the reflecting surface 21 at the same ratio and the ratio ⁇ .
- each of the optical fibers 14a, 14b, and 14c , 14c it is possible to monitor each light amount of the signal light L propagating in 14d.
- FIG. 11 is a perspective view showing a structure of a monitoring device 32 according to Embodiment 3 of the present invention
- FIG. 12 is a plan view thereof.
- the monitoring device 32 is obtained by adding a light receiving element array 33 to the monitoring device 31 of the second embodiment.
- a horizontal piece 34a of a flexible board 34 bent in a substantially L shape is joined, and a light receiving element array 33 is mounted on a vertical and vertical piece 34b of the flexible board 34. . Further, two spacers 35 are attached to the vertical and vertical pieces 34b so as to sandwich the light receiving element array 33.
- the flexible substrate 34 is attached to the triangular prism 13 and the upper surface of the base 23 such that the spacer 35 is brought into contact with the reflection surface 21 of the adjusted triangular prism 13.
- the light receiving element array 33 is arranged in parallel with the reflecting surface 21 so as to leave a gap between the light receiving element array 33 and the reflecting surface 21.
- the light receiving element array 33 has a plurality of light receiving elements 24 mounted thereon. Is tilted in the direction in which the leaked light La is incident so that light can be received efficiently.
- the light receiving element array 33 is opposed to the reflecting surface 21.
- FIG. 13 is a perspective view showing the structure of a monitoring device 36 according to Embodiment 4 of the present invention
- FIG. 14 is a sectional view thereof
- FIG. 15 is a schematic sectional view of the triangular prism 13 and the deflecting prism 38.
- This monitoring device 36 is also based on the monitoring device 31 of the second embodiment, and is further provided with a deflection prism 38 and a light receiving element array 33 added thereto.
- a deflection prism 38 having a right-angled isosceles cross section is previously attached to the outside of the reflection surface 21 via a spacer 37, and the deflection prism 38 is connected to the reflection surface 21. They face each other in parallel with a gap. Due to the deflecting prism 38, the leaked light La leaking from the reflecting surface 21 of the triangular prism 13 is bent right below as shown in FIG. A light receiving element array 33 is fixed on the upper surface of the base 23 so as to receive each leaked light La bent downward by the deflecting prism 38.
- the light receiving element array 33 can be installed on the base 23 in parallel with the base 23, so that wiring to the light receiving element array 33 becomes easy.
- Example 5
- FIG. 16 is a perspective view showing the structure of the monitoring device 41 according to Embodiment 5 of the present invention.
- an optical fiber array 12 having two stages of optical fibers 14a, 14b,... And optical fibers 15a, 15b,.
- a plurality of optical fibers 14a, 14b,... are held in a row with their ends aligned in parallel, and as shown in FIG. 17 (b).
- a plurality of optical fibers 15a, 15b,... are held in a line with their ends aligned in parallel, and the upper optical fibers 14a, 14b,. There is a one-to-one correspondence up and down.
- the lens array 17 is also provided with a plurality of lenses 19 in two stages corresponding to the optical fibers 14a, 14b,..., 15a, 15b,.
- the triangular prism 13 has a reflection surface 20 and a reflection surface 21 positioned vertically and a light entrance / exit surface 22 facing the lens 19, and is rotatable about a horizontal rotation axis. Supported (support means are omitted).
- the triangular prism 13 is arranged so that the entrance / exit surface 22 and the lens array 17 are parallel.
- the signal light L emitted from the optical fiber 14a is collimated by the lens 19, enters the triangular prism 13, is totally reflected twice by the reflecting surfaces 20 and 21, and is reflected by the triangular prism 13 to the lens 19 And is condensed by the lens 19 and coupled to the optical fiber 15a.
- the signal lights L emitted parallel to each other from the optical fibers 14b, 14c,... Pass through the lens 19 and are totally reflected twice by the reflecting surfaces 20 and 21 of the triangular prism 13 so as to be reflected twice.
- the optical fibers are coupled to the optical fibers 15b, 15c,.
- the angle and the like of the triangular prism 13 are adjusted (the adjustment method is different between the horizontal direction and the vertical direction, but is performed in the same manner as the method shown in FIG. 7).
- the signal light L emitted from any of the optical fibers 14a, 14b, 14c,... Is equal and enters the reflecting surface 21 at an incident angle.
- the signal light L of the deviation is equal, and leaks from the reflection surface 21 at a ratio ⁇ . Therefore, if the amount of the leaked light La from the reflecting surface 21 of the signal light L emitted from each of the optical fibers 14a, 14b, 14c,... Is individually measured by the light receiving element, each of the optical fibers 14a, 14b, 14c , ... can monitor the amount of each signal light L propagating in the light.
- FIG. 19 is a perspective view showing a structure of a monitoring device 42 according to Embodiment 6 of the present invention
- FIG. 20 is an enlarged sectional view thereof.
- This monitoring device 42 is based on the monitoring device 41 of the fifth embodiment, with the light receiving element array 33 added thereto.
- the light receiving element array 33 is fixed on the upper surface of the base 23 so as to receive each leaked light La leaked from the triangular prism 13. .
- FIG. 21 is a perspective view showing a structure of a monitoring device 43 according to Embodiment 7 of the present invention
- FIG. 22 is an enlarged sectional view thereof.
- This monitoring device 43 is based on the monitoring device 41 of the fifth embodiment, with a light receiving element array 33 and the like added thereto.
- a deflecting prism 45 mounted on a triangular prism via a spacer 44 is attached to the reflecting surface 21 of the triangular prism 13.
- the deflection prism 45 By attaching the deflection prism 45 to the reflection surface 21, the leakage light La emitted from the reflection surface 21 of the triangular prism 13 can be bent in a direction closer to the direction perpendicular to the base 23.
- each light receiving element 24 can receive the leaked light La substantially vertically, and the light receiving sensitivity is improved.
- FIG. 23 is a perspective view of a monitoring device 51 according to Embodiment 8 of the present invention, and FIG. 24 is an enlarged sectional view thereof.
- the leakage light La is generated without changing the angle of the triangular prism 13.
- This monitoring device 51 uses the optical fiber array 12 described in the fifth embodiment (FIG. 16).
- the triangular prism 13 is arranged so that the entrance / exit surface 22 is parallel to the lens array 17. Further, a branch filter 52 is formed in at least a region of the reflection surface 21 of the triangular prism 13 where the signal light L is incident.
- the branching filter 52 transmits light having a certain ratio ⁇ of the incident light and reflects the remaining light.
- the light receiving element array 33 is arranged at a position where the light transmitted through the branch filter 52 reaches.
- the signal light L emitted from the optical fiber 14a is converted into parallel light by the lens 19 and then enters the triangular prism 13.
- the light is totally reflected by the reflection surface 20 and enters the reflection surface 21.
- FIG. 25 is a perspective view of a monitoring device 53 according to Embodiment 9 of the present invention
- FIG. 26 is an enlarged sectional view thereof.
- This monitoring device 53 is obtained by adding a deflecting prism 54 having a triangular prism shape to the monitoring device 51 shown in FIG. That is, the deflecting prism 54 is attached to the reflecting surface 21 of the triangular prism 13 with the branching filter 52 attached to the reflecting surface 21 interposed therebetween.
- the direction of the leaked light La that has passed through the branch filter 52 and leaked is bent by the deflecting prism 54 so that the light La enters the light receiving element array 33 mounted on the base 23 almost vertically.
- the sensitivity of the light receiving element 24 can be improved.
- the monitoring device of the present invention can be used for monitoring the amount of signal light propagating through an optical transmission line such as an optical fiber or an optical waveguide in the field of optical communication.
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Abstract
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/564,793 US20060209396A1 (en) | 2003-07-14 | 2004-07-12 | Monitoring device |
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JP2003274105A JP2005037659A (ja) | 2003-07-14 | 2003-07-14 | モニタリング装置 |
JP2003-274105 | 2003-07-14 |
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WO2005006043A1 true WO2005006043A1 (ja) | 2005-01-20 |
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PCT/JP2004/009933 WO2005006043A1 (ja) | 2003-07-14 | 2004-07-12 | モニタリング装置 |
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US (1) | US20060209396A1 (ja) |
JP (1) | JP2005037659A (ja) |
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JP6874596B2 (ja) * | 2017-08-25 | 2021-05-19 | 日本電気硝子株式会社 | プリズム |
US10859775B1 (en) * | 2019-09-05 | 2020-12-08 | Applied Optoelectronics, Inc. | Optical turning mirror with angled output interface to increase coupling efficiency and a multi-channel optical subassembly using same |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05313097A (ja) * | 1992-05-06 | 1993-11-26 | Matsushita Electric Ind Co Ltd | 光結合器 |
JPH06148470A (ja) * | 1992-11-10 | 1994-05-27 | Matsushita Electric Ind Co Ltd | 光受動モジュール |
US6031952A (en) * | 1998-11-13 | 2000-02-29 | Dicon Fiberoptics, Inc. | Broadband coupler |
US6411428B1 (en) * | 2000-03-03 | 2002-06-25 | Dicon Fiberoptics, Inc. | Multi-functional optical processor useful for fiberoptic applications |
US20030063844A1 (en) * | 2001-09-28 | 2003-04-03 | Caracci Stephen J. | Optical signal device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5355249A (en) * | 1992-04-21 | 1994-10-11 | Matsushita Electric Industrial Co., Ltd. | Optical passive components |
US5299056A (en) * | 1992-05-06 | 1994-03-29 | Matsushita Electric Industrial Co., Ltd. | Optical passive component assembly |
US6628455B1 (en) * | 2000-03-03 | 2003-09-30 | Dicon Fiberoptics, Inc. | Multi-functional optical processor useful for fiberoptic applications |
-
2003
- 2003-07-14 JP JP2003274105A patent/JP2005037659A/ja active Pending
-
2004
- 2004-07-12 WO PCT/JP2004/009933 patent/WO2005006043A1/ja active Application Filing
- 2004-07-12 CN CNA2004800183721A patent/CN1813209A/zh active Pending
- 2004-07-12 US US10/564,793 patent/US20060209396A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05313097A (ja) * | 1992-05-06 | 1993-11-26 | Matsushita Electric Ind Co Ltd | 光結合器 |
JPH06148470A (ja) * | 1992-11-10 | 1994-05-27 | Matsushita Electric Ind Co Ltd | 光受動モジュール |
US6031952A (en) * | 1998-11-13 | 2000-02-29 | Dicon Fiberoptics, Inc. | Broadband coupler |
US6411428B1 (en) * | 2000-03-03 | 2002-06-25 | Dicon Fiberoptics, Inc. | Multi-functional optical processor useful for fiberoptic applications |
US20030063844A1 (en) * | 2001-09-28 | 2003-04-03 | Caracci Stephen J. | Optical signal device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120131687A1 (en) * | 2008-09-24 | 2012-05-24 | Sumitomo Chemical Company, Ltd. | Agent that modulates physiological condition of pests, involved in insect voltage-gated potassium channel activity |
US10481349B2 (en) | 2015-10-20 | 2019-11-19 | Sony Corporation | Optical path conversion device, optical interface apparatus, and optical transmission system |
Also Published As
Publication number | Publication date |
---|---|
JP2005037659A (ja) | 2005-02-10 |
US20060209396A1 (en) | 2006-09-21 |
CN1813209A (zh) | 2006-08-02 |
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