CN103268003A - Photoelectronic device based on wavelength division multiplexing - Google Patents
Photoelectronic device based on wavelength division multiplexing Download PDFInfo
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- CN103268003A CN103268003A CN201310196552XA CN201310196552A CN103268003A CN 103268003 A CN103268003 A CN 103268003A CN 201310196552X A CN201310196552X A CN 201310196552XA CN 201310196552 A CN201310196552 A CN 201310196552A CN 103268003 A CN103268003 A CN 103268003A
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Abstract
The invention discloses a pohotoelectronic device based on wavelength division multiplexing. The pohotoelectronic device based on the wavelength division multiplexing comprises a detector, a curve-face reflecting device, a WDM optical filter, a dual-tail fiber device and a WDM optical filter tube body, wherein the WDM optical filter is installed on a support inside the WDM optical filter tube body in a built-in mode, and the curve-face reflecting device is fixedly arranged on the upper portion of the WDM optical filter tube body through insulating materials and above the built-in WDM optical filter. In the direction of the optical axis of the detector, the detector is fixedly arranged on one side of the WDM optical filter tube body through insulating materials, and the dual-tail optical device is fixedly arranged on the other side of the WDM optical filter tube body. Through the application of the pohotoelectronic device based on the wavelength division multiplexing, needed time for adjustment can be reduced, and adjusting efficiency and receiving effects can be improved.
Description
Technical field
The present invention relates to optical communication field, relate in particular to a kind of electrooptical device based on wavelength-division multiplex.
Background technology
In recent years, insert based on the optical fiber of optical fiber communication that (FTTx Fiber-to-the-x) waits the broadband network that voice, data and the Video service of high speed can be provided for the user, has obtained fast development.In the existing broadband network, still do not support CATV (cable television) (CATV, Community Antenna Television) business.Thereby, in order to expand the application function of broadband network, need upgrade to existing broadband network, so that it supports the CATV business, should few as far as possible legacy network be changed simultaneously.
Existing upgrading mode commonly used is the local side at optical-fiber network, for example, optical line terminal (the OLT of optical-fiber network end, Optical Line Terminal) carries out the broadcasting of CATV signal, and at user side optical network unit (ONU, Optical Network Unit) in the electrooptical device, the photoelectric component that receives the CATV signal is set.
Fig. 1 is existing electrooptical device structural representation based on wavelength-division multiplex.Referring to Fig. 1, this electrooptical device comprises: detector 1, shell 2, wavelength division multiplexer (WDM, Wavelength Division Multiplexing) optical filter 3, collimating apparatus 4 and double tail fiber device 5, wherein, shell 2 is built-in with the part of WDM optical filter 3, collimating apparatus 4 and double tail fiber device 5, the external diameter of shell 2 is close with detector 1 size, WDM optical filter 3 need be adjusted to special angle, to reach the tail optical fiber end of specific band light signal (CATV signal and non-CATV signal) from double tail fiber device 5 is reflexed to the purpose of another tail optical fiber end.
The light signal first transmitting-receiving port 6(first tail optical fiber in the double tail fiber device 5) receives the uplink optical signal that outside ONU sends, uplink optical signal is non-CATV signal, export collimating apparatus 4 to, by collimating apparatus 4 collimate handle after, obtain up collimation (parallel) light, up collimated light exports WDM optical filter 3 to, the up collimated light reflection that WDM optical filter 3 will receive, export collimating apparatus 4 to, collimating apparatus 4 collimates after (converging) processing again, export light signal second transmitting-receiving port 7(second tail optical fiber in the double tail fiber device 5 to), and export the optical-fiber network end to by the light signal second transmitting-receiving port 7 in the double tail fiber device 5, finally be transferred to the OLT of optical network local side.
The downlink optical signal of optical-fiber network end transmission, comprise CATV signal and non-CATV signal, export the light signal second transmitting-receiving port 7 in the double tail fiber device 5 to, the light signal second transmitting-receiving port 7 in the double tail fiber device 5 receives the downlink optical signal that outside OLT sends, export collimating apparatus 4 to, by collimating apparatus 4 collimate handle after, obtain descending collimated light, descending collimated light exports WDM optical filter 3 to.Wherein,
For non-CATV signal, WDM optical filter 3 exports the collimated light reflection that receives to collimating apparatus 4, after the processing that collimates again, export the light signal first transmitting-receiving port 6 in the double tail fiber device 5 to, and export user side ONU to by the light signal first transmitting-receiving port 6 in the double tail fiber device 5.
For the CATV signal, WDM optical filter 3 carries out transmission with the collimated light that receives, and exports detector 1 to, and the CATV light signal that detector 1 receives through 3 transmissions of WDM optical filter changes electric signal into after the processing, export user side to from pin.
3 pairs of CATV signals of WDM optical filter carry out transmission, and non-CATV signal is reflected or total reflection, can different anti-reflection films be set realize according to the wavelength characteristics of CATV signal and non-CATV signal.In the practical application, WDM optical filter 3 initially can be installed in the shell 2, then, setting angle by fine setting WDM optical filter 3, thereby realize the CATV signal is carried out transmission, non-CATV signal is reflected or total reflection, and feasible light signal through collimating apparatus 4 convergence processing can converge at the corresponding tail optical fiber in the double tail fiber device 5.
By as seen above-mentioned, existing electrooptical device based on wavelength-division multiplex, the shell size is subjected to the assembling restriction, external diameter and detector are suitable, and consider the requirement of mechanical strength of electrooptical device, the tube wall of shell can not be too thin, therefore, the shell internal diameter size is very limited, make limited space in shell, by regulating setting angle and the position of WDM optical filter, it is limited to regulate surplus, angular adjustment is very difficult, and the adjusting required time is long, adjusting efficient is low.
In addition, because whole optical path has adopted the collimated light scheme, cause that detector has been had additional requirement, require the photoelectric chip of receiving optical signals in the detector must be positioned on the focal plane of finder lens cap, otherwise just can't realize best reception.
Summary of the invention
Embodiments of the invention provide a kind of electrooptical device based on wavelength-division multiplex, reduce and regulate required time, raising adjusting efficient and reception.
For achieving the above object, a kind of electrooptical device based on wavelength-division multiplex that the embodiment of the invention provides, this electrooptical device comprises: detector, camber reflection device, WDM optical filter, double tail fiber device and WDM optical filter body, wherein,
The WDM optical filter is built on the interior support of WDM optical filter body, and above built-in WDM optical filter, the camber reflection device is fixed on WDM optical filter body top by insulating material; Along the detector optical axis direction, detector is fixed on a side of WDM optical filter body by insulating material, and the opposite side of WDM optical filter body fixedly has the double tail fiber device.
Preferably, on optical axis direction, the optical axis of the optical axis of described detector and double tail fiber device is on same straight line.
Preferably, described camber reflection device is concave mirror, and concave surface is towards the WDM optical filter, and reflecting surface is concave surface, its focal length is the particular value through design, makes to be reflected into another fibre core end face from the light of the end face outgoing of one of two fibre core end faces of double tail fiber device.
Preferably, described camber reflection device is convex reflecting mirror, convex surface is not towards the WDM optical filter, the back side of convex surface is towards the WDM optical filter, convex surface is reflecting surface, its focal length is the particular value through design, makes to be reflected into another fibre core end face from the light of the end face outgoing of one of two fibre core end faces of double tail fiber device.
Preferably, described WDM optical filter coating face is towards the camber reflection device, and non-plated film face is towards detector, and the angular range between non-plated film face and the detector optical axis is 38 °～52 °.
Preferably, the normal of described camber reflection device and the angular range between the optical axis are 83 °～97 °.
Preferably, described detector is indium gallium arsenic fast photodiode detector or avalanche photodide detector.
Preferably, the photosurface of receiving optical signals is positioned at outside the focal length of finder lens focal plane in the described detector.
Preferably, first tail optical fiber in the double tail fiber device receives the uplink optical signal that outside optical network unit ONU is sent, and transmission comes from downlink optical signal optical-fiber network, the described electrooptical device of process to ONU;
Second tail optical fiber in the double tail fiber device receives the downlink optical signal that comes from optical-fiber network, and transmission comes from uplink optical signal optical network unit ONU, the described electrooptical device of process to optical-fiber network;
Detector receives the CATV signal that comes from optical-fiber network, is converted into electric signal, exports from pin.
Preferably, first tail optical fiber in the double tail fiber device receives the uplink optical signal that outside optical network unit ONU is sent, export collimating apparatus to, collimating by collimating apparatus exports the WDM optical filter to after handling, and the WDM optical filter reflexes to reflection device, and reflection device is reflected back WDM optical filter again, the WDM optical filter reflects again, export collimating apparatus to and converge, export second tail optical fiber in the double tail fiber device to, and export the optical-fiber network end to by second tail optical fiber in the double tail fiber device;
The downlink optical signal of optical-fiber network end transmission exports second tail optical fiber in the double tail fiber device to, exports collimating apparatus then to, exports the WDM optical filter after collimating apparatus collimates and handles to:
For non-CATV signal, the WDM optical filter reflexes to reflection device, and reflection device is reflected back WDM optical filter again, the WDM optical filter reflects again, export collimating apparatus to and converge, export first tail optical fiber in the double tail fiber device to, and export ONU to by first tail optical fiber in the double tail fiber device;
For the CATV signal, the WDM optical filter carries out transmission, exports detector to, and detector receives the CATV light signal through the transmission of WDM optical filter, changes electric signal after the processing into, exports user side to from pin.
As seen from the above technical solution, a kind of electrooptical device based on wavelength-division multiplex that the embodiment of the invention provides, be set to independently element by the WDM optical filter, and above the WDM optical filter, reflection device is set, in order to carry out the adjusting of reflection ray, make the reflection part that needs to regulate regulate the space increase, reduce and regulate the required time; That is to say, the adjusting space that the accommodation reflex device has in this patent, more loose than the adjusting space that the WDM optical filter of prior art scheme has, thus making to regulate becomes comparatively easy.Simultaneously, because the WDM optical filter has had bigger installing space, more convenient to operate during assembling.
Meanwhile, this patent has adopted non-collimated light technology, owing to do not adopt the collimated light scheme, feasible requirement to detector has also reduced, and is concrete, reduced the requirement to the photoelectric chip position of detector receiving optical signals.Photoelectric chip in the detector needn't be positioned on the focal plane of finder lens cap again, as long as be positioned at outside the focal plane of finder lens cap, when making photoelectric device, by adjusting detector to the distance of double tail fiber device, that is, adjust object distance, can make detector realize best reception.
Description of drawings
In order to be illustrated more clearly in the present invention or technical scheme of the prior art, below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art.Apparently, the accompanying drawing in below describing only is some embodiments of the present invention, for those of ordinary skills, can also obtain other embodiment and accompanying drawing thereof according to these accompanying drawing illustrated embodiments.
Fig. 1 is existing electrooptical device structural representation based on wavelength-division multiplex.
Fig. 2 is that the embodiment of the invention is based on the electrooptical device structural representation of wavelength-division multiplex.
Fig. 3 is that the embodiment of the invention is based on the electrooptical device sectional structure synoptic diagram of wavelength-division multiplex.
Embodiment
Below with reference to accompanying drawing technical scheme of the present invention is carried out clear, complete description, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are resulting all other embodiment under the prerequisite of not making creative work, all belong to the scope that the present invention protects.
Existing electrooptical device based on wavelength-division multiplex owing to the shell internal diameter size is limited, is regulated setting angle and the position of WDM optical filter in shell, regulate difficulty, and required time is long, adjusting efficient is low.
Simultaneously, the collimated light technology that existing scheme adopts is had higher requirement to the position of photoelectric chip in the detector, and when having only photoelectric chip to be positioned on the focal plane of finder lens, device just has the effect of best reception CATV signal.
The setting angle of considering the WDM optical filter needs and can carry out transmission to the CATV signal, non-CATV signal is reflected, feasible adjusting is difficulty comparatively, in the embodiment of the invention, consider that the WDM optical filter is set to independently element, be about to the WDM optical filter and be not built in the shell, and above the WDM optical filter, reflection device is set, in order to carry out the adjusting of reflection ray, make the reflection part that needs to regulate regulate the space increase, reduce and regulate the required time; That is to say, the adjusting space that the accommodation reflex device has in this patent, more loose than the adjusting space that the WDM optical filter of prior art scheme has, thus making to regulate becomes comparatively easy.Simultaneously, because the WDM optical filter has had bigger installing space, more convenient to operate during assembling.
Meanwhile, this patent has adopted non-collimated light technology, and feasible requirement to detector has also reduced.Photoelectric chip in the detector needn't be positioned on the focal plane of finder lens cap again, as long as be positioned at outside the focal plane of finder lens cap, when making photoelectric device, by adjusting detector to the distance of double tail fiber device, can make detector realize best reception.
Fig. 2 is that the embodiment of the invention is based on the electrooptical device structural representation of wavelength-division multiplex.Referring to Fig. 2, this electrooptical device comprises: detector 21, camber reflection device 22, WDM optical filter 23, double tail fiber device 25 and WDM optical filter body 26, wherein,
WDM optical filter 23 is built on the support in the WDM optical filter body 26, and above built-in WDM optical filter 23, camber reflection device 22 is fixed on WDM optical filter body 26 tops by insulating material; Optical axis (radially) direction along detector 21, detector 21 is fixed on a side of WDM optical filter body 26 by insulating material, the opposite side of WDM optical filter body 26 fixedly has double tail fiber device 25, and the optical axis of the optical axis of detector 21 and double tail fiber device 25 is same straight line.
Preferably, camber reflection device 22 is concave mirror, and concave surface is towards the WDM optical filter, and reflecting surface is concave surface, its focal length is the particular value through design, can be so that be reflected into another fibre core end face from the light of the end face outgoing of one of two fibre core end faces of double tail fiber device.
In the practical application, camber reflection device 22 also can be convex reflecting mirror, convex surface is not towards the WDM optical filter, the back side of convex surface is towards the WDM optical filter, convex surface is reflecting surface, its focal length is the particular value through design, makes to be reflected into another fibre core end face from the light of the end face outgoing of one of two fibre core end faces of double tail fiber device.
In the embodiment of the invention, be provided with two fibre cores in the double tail fiber device 25, handle by bifurcated, outside or inner at double tail fiber device 25, form two tail optical fibers that have tail wires of fiber optics, tail optical fiber is connected with user side (ONU) with exterior light network-side (OLT) respectively.Wherein, crotch can be arranged on the end of double tail fiber device 25, namely with the interface of outside, also can be arranged on the inside of double tail fiber device 25, and namely tail optical fiber stretches in the double tail fiber device 25, by bifurcated, forms two fibre cores.
In the practical application, the optical interface device is as the public input/output end port of electrooptical device, can adopt plug-in square (SC) plug-type or plug-in round (LC) plug-type, perhaps, adopt plug-in square/microballoon face grinding and polishing (SC/PC) tail fiber type, plug-in square/be the oblique angle and do microballoon face grinding and polishing (SC/APC) tail fiber type or plug-in round/be the oblique angle and make microballoon face grinding and polishing (LC/APC) type, to be connected with the light mouth of external network, realize the single fiber bi-directional transfer function.
Preferably, detector can be that (PIN, Positive-intrinsic-Negtive) detector also can be avalanche photodide (APD, Avalanche Photo Diode) detectors to indium gallium arsenic fast photodiode.
Preferably, the photosurface of receiving optical signals is positioned at outside the focal length of finder lens focal plane in the detector.
Preferably; WDM optical filter body is hexahedral shape; institute it should be noted that; it is exemplary that WDM optical filter body adopts hexahedral shape; every can be respectively fixedly WDM optical filter and reflection device, and the shape that makes reflection device be positioned at WDM optical filter upper end all falls within the scope of protection of the present invention.
In the practical application, before detector 21 is fixed on a side of WDM optical filter body 26 by insulating material 28, can position detector 21: after WDM optical filter 23 is installed according to the angle that sets in advance, insert outside CATV signal by double tail fiber device 25, export WDM optical filter 23 to, 23 pairs of CATV signals of WDM optical filter carry out transmission, export detector 21 to, by fine adjustment detector 21, the CATV light signal that makes detector 21 receive reaches the strongest, then, fixed detector 21.In the embodiment of the invention; be exemplary by insulating material with the fixed form that detector 21 is fixed on WDM optical filter body 26 1 sides; every other fixed form and immobilization material that detector 21 can be fixed on WDM optical filter body 26 1 sides all falls into protection scope of the present invention.
In the embodiment of the invention, camber reflection device 22 is fixed on WDM optical filter body 26 tops by insulating material 29, before fixing, can position camber reflection device 22: after WDM optical filter 23 is installed according to the angle that sets in advance, insert outside non-CATV signal by a tail optical fiber in the double tail fiber device 25, export WDM optical filter 23 to, 23 pairs of non-CATV signals of WDM optical filter reflect, export the camber reflection device 22 on top to, after the non-CATV signal of 22 pairs of receptions of camber reflection device carries out convergence processing, reflex to WDM optical filter 23, WDM optical filter 23 carries out secondary reflection again, and another root tail optical fiber in the double tail fiber device 25 is returned in the non-CATV signal reflex that receives.By setting angle and the position of fine setting camber reflection device 22, make the non-CATV light signal of another root tail optical fiber in the reflected back double tail fiber device 25 reach the strongest, then, fixedly the camber reflection device 22.In the embodiment of the invention; adopting insulating material is exemplary with the fixed form that camber reflection device 22 is fixed on WDM optical filter body 26 tops; every fixed form and immobilization material that camber reflection device 22 can be fixed on WDM optical filter body 26 tops all falls into protection scope of the present invention.
In the embodiment of the invention, electrooptical device both can be applied to ethernet passive optical network (EPON, Ethernet Passive Optical Network) system, also can be applied to gigabit passive optical network (GPON, Gigabit Passive Optical Network) system, optical network unit (ONU, Optical Network Unit) Shu Chu uplink optical signal wavelength is 1310nm, the wavelength of the non-CATV light signal in the downlink optical signal of OLT output is 1490nm, and the wavelength of the CATV signal in the downlink optical signal is 1550nm.The CATV signal of WDM optical filter 23 transmission 1550nm, the uplink optical signal of reflection 1310nm and the downlink optical signal of 1490nm.
Preferably, the light signal of 23 couples of 1260～1360nm of WDM optical filter and 1480～1500nm has good total reflection characteristic; CATV light signal to 1550～1560nm has good transmissison characteristic.
Structure and workflow thereof about detector 21, WDM optical filter 23 and double tail fiber device 25 are prior art, omit detailed description at this.
Fig. 3 is that the embodiment of the invention is based on the electrooptical device sectional structure synoptic diagram of wavelength-division multiplex.Referring to Fig. 3, this electrooptical device of analysing and observe comprises: detector 21, camber reflection device 22, WDM optical filter 23 and double tail fiber device 25, wherein,
On optical axis direction, detector 21 is positioned at the left side of double tail fiber device 25, the optical axis of the optical axis of detector 21 and double tail fiber device 25 is on same straight line, detector 21 is used for receiving from the next CATV light signal of WDM optical filter 23 transmissions, and after the CATV light signal that receives is converted into electric signal, insert in the external circuits through the pin of detector 21;
Double tail fiber device 25 has two tail optical fibers, be respectively first tail optical fiber and second tail optical fiber, two tail optical fibers are on double tail fiber device 25 internal ports, be respectively applied to connect outside optical-fiber network end and user side, receive the uplink optical signal of user side output by first tail optical fiber, export WDM optical filter 23 to, WDM optical filter 23 reflexes to camber reflection device 22 with the uplink optical signal that receives, the uplink optical signal of 22 pairs of receptions of camber reflection device converges and reflected back WDM optical filter 23, WDM optical filter 23 carries out secondary reflection again and imports second tail optical fiber, exports the optical-fiber network end to by second tail optical fiber; Receive the downlink optical signal of optical-fiber network end output by second tail optical fiber, export WDM optical filter 23 to, WDM optical filter 23 reflexes to camber reflection device 22 with the downlink optical signal that receives, the downlink optical signal of 22 pairs of receptions of camber reflection device converges and reflected back WDM optical filter 23, WDM optical filter 23 carries out secondary reflection again and imports first tail optical fiber, exports user side to by first tail optical fiber.
In the embodiment of the invention, the fibre core of two tail optical fibers in the double tail fiber device 25 can share a ceramic sheath, and the fibre core of first tail optical fiber and second tail optical fiber is the optical axis of close detector 21 all.Like this, by the light signal of first tail optical fiber and the transmission of second tail optical fiber, directive WDM optical filter 23 carries out transmission or reflection; And by the light signal of WDM optical filter 23 reflection, through converging and the reflection again of WDM optical filter 23 of camber reflection device 22, converge at second tail optical fiber or first tail optical fiber, export the outside to by second tail optical fiber or first tail optical fiber then.That is to say the light signal that the tail optical fiber of connection optical-fiber network end or user side sends, directive WDM optical filter 23.Wherein, if light signal is the CATV light signal, be transmitted through detector 21 by WDM optical filter 23; If light signal is non-CATV light signal, reflexed to camber reflection device 22 by WDM optical filter 23, by after the converging and reflect of camber reflection device 22, directive WDM optical filter 23 again, again by after 23 reflections of WDM optical filter, enter first tail optical fiber or second tail optical fiber, and transfer to the outside.
In the embodiment of the invention, by adjusting setting angle and the position of camber reflection device 22, can change the position that light signal converges on WDM optical filter 23 planes, can make on its fibre core that converges in first tail optical fiber or second tail optical fiber through after the reflection of WDM optical filter 23.
WDM optical filter 23 is between detector 21 and double tail fiber device 25, and the plated film face is towards camber reflection device 22, and non-plated film face is towards detector 21.Setting angle, namely the angle between non-plated film face and the detector 21 optical axis extended lines is α.The plated film face is for separating of non-CATV signal and CATV signal: behind the uplink optical signal or the non-CATV signal in the downlink optical signal that receive 25 outputs of double tail fiber device, reflex to camber reflection device 22, after Via reflectance device 22 converges, reflects, again directive WDM optical filter 23, WDM optical filter 23 receives the light signal that camber reflection device 22 returns, through secondary reflection again, export double tail fiber device 25 to; Behind the CATV signal in the downlink optical signal that receives 25 outputs of double tail fiber device, be transmitted through detector 21;
In the embodiment of the invention, WDM optical filter 23 has the complete transmission of CATV light signal, the characteristic that non-CATV light signal is reflected fully.
Preferably, camber reflection device 22 is concave mirror, and concave surface is towards the WDM optical filter, and reflecting surface is concave surface, and its focal length is the particular value through design, makes to be reflected into another fibre core end face from the light of the end face outgoing of one of two fibre core end faces of double tail fiber device.Perhaps, camber reflection device 22 is convex reflecting mirror, convex surface is not towards the WDM optical filter, the back side of convex surface is towards the WDM optical filter, convex surface is reflecting surface, its focal length is the particular value through design, makes to be reflected into another fibre core end face from the light of the end face outgoing of one of two fibre core end faces of double tail fiber device.
Preferably, the span of α is 38 °～52 °, and the span of β is 83 °～97 °.
Below the workflow of the embodiment of the invention based on the electrooptical device of wavelength-division multiplex is described in detail.
First tail optical fiber in the double tail fiber device 25 receives the uplink optical signal that outside ONU sends, uplink optical signal is non-CATV signal, export WDM optical filter 23 to, the non-CATV signal reflex that WDM optical filter 23 will receive is to camber reflection device 22, the non-CATV signal of 22 pairs of receptions of camber reflection device carries out convergence processing, reflected back WDM optical filter 23 again, the non-CATV signal of 23 pairs of receptions of WDM optical filter reflects again, export second tail optical fiber in the double tail fiber device 25 to, and export the optical-fiber network end to by second tail optical fiber in the double tail fiber device 25, finally arrive optical network local side OLT.Like this, can realize that the non-CATV signal that receives in first tail optical fiber exports WDM optical filter 23 to by point mode, the reflection again by the converging of camber reflection device 22, reflection and WDM optical filter 23 inputs to second tail optical fiber with point mode again.
The downlink optical signal of optical-fiber network end (coming from optical network local side OLT transmission) transmission, comprise CATV signal and non-CATV signal, export second tail optical fiber in the double tail fiber device 25 to, second tail optical fiber in the double tail fiber device 25 receives the downlink optical signal that outside OLT sends, and exports WDM optical filter 3 to.Wherein,
For non-CATV signal, the non-CATV signal reflex that WDM optical filter 23 will receive is to camber reflection device 22, the non-CATV signal that camber reflection device 22 will receive carries out convergence processing, reflected back WDM optical filter 23 again, the non-CATV signal of 23 pairs of receptions of WDM optical filter reflects again, export first tail optical fiber in the double tail fiber device 25 to, and export user side ONU to by first tail optical fiber in the double tail fiber device 25.
For the CATV signal, WDM optical filter 23 carries out transmission with the CATV signal that receives, and exports detector 21 to, and the CATV light signal that detector 21 receives through 23 transmissions of WDM optical filter changes electric signal into after the processing, export user side to from pin.
By as seen above-mentioned, in the embodiment of the invention, be set to independently element by the WDM optical filter, and above the WDM optical filter, reflection device is set, in order to carry out the adjusting of reflection ray, make the reflection part that needs to regulate regulate the space increase, reduce and regulate the required time; That is to say, the adjusting space that the accommodation reflex device has in this patent, more loose than the adjusting space that the WDM optical filter of prior art scheme has, thus making to regulate becomes comparatively easy.Simultaneously, because the WDM optical filter has had bigger installing space, more convenient to operate during assembling.
Meanwhile, this patent has adopted non-collimated light technology, owing to do not adopt the collimated light scheme, feasible requirement to detector has also reduced, and is concrete, reduced the requirement to the photoelectric chip position of detector receiving optical signals.Photoelectric chip in the detector needn't be positioned on the focal plane of finder lens cap again, as long as be positioned at outside the focal plane of finder lens cap, when making photoelectric device, by adjusting detector to the distance of double tail fiber device, that is, adjust object distance, can make detector realize best reception.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also comprises these changes and modification interior.
Claims (10)
1. the electrooptical device based on wave division multiplexing WDM is characterized in that, this electrooptical device comprises: detector, camber reflection device, WDM optical filter, double tail fiber device and WDM optical filter body, wherein,
The WDM optical filter is built on the interior support of WDM optical filter body, and above built-in WDM optical filter, the camber reflection device is fixed on WDM optical filter body top by insulating material; Along the detector optical axis direction, detector is fixed on a side of WDM optical filter body by insulating material, and the opposite side of WDM optical filter body fixedly has the double tail fiber device.
2. electrooptical device according to claim 1 is characterized in that, on optical axis direction, the optical axis of the optical axis of described detector and double tail fiber device is on same straight line.
3. electrooptical device according to claim 2, it is characterized in that, described camber reflection device is concave mirror, concave surface is towards the WDM optical filter, reflecting surface is concave surface, its focal length is the particular value through design, makes to be reflected into another fibre core end face from the light of the end face outgoing of one of two fibre core end faces of double tail fiber device.
4. electrooptical device according to claim 2, it is characterized in that, described camber reflection device is convex reflecting mirror, convex surface is not towards the WDM optical filter, the back side of convex surface is towards the WDM optical filter, convex surface is reflecting surface, and its focal length is the particular value through design, makes to be reflected into another fibre core end face from the light of the end face outgoing of one of two fibre core end faces of double tail fiber device.
5. according to claim 3 or 4 described electrooptical devices, it is characterized in that described WDM optical filter coating face is towards the camber reflection device, non-plated film face is towards detector, and the angular range between non-plated film face and the detector optical axis is 38 °～52 °.
6. electrooptical device according to claim 5 is characterized in that, the normal of described camber reflection device and the angular range between the optical axis are 83 °～97 °.
7. according to claim 3 or 4 described electrooptical devices, it is characterized in that described detector is indium gallium arsenic fast photodiode detector or avalanche photodide detector.
8. electrooptical device according to claim 7 is characterized in that, the photosurface of receiving optical signals is positioned at outside the focal length of finder lens focal plane in the described detector.
9. electrooptical device according to claim 5 is characterized in that,
First tail optical fiber in the double tail fiber device receives the uplink optical signal that outside optical network unit ONU is sent, and transmission comes from downlink optical signal optical-fiber network, the described electrooptical device of process to ONU;
Second tail optical fiber in the double tail fiber device receives the downlink optical signal that comes from optical-fiber network, and transmission comes from uplink optical signal optical network unit ONU, the described electrooptical device of process to optical-fiber network;
Detector receives the CATV signal that comes from optical-fiber network, is converted into electric signal, exports from pin.
10. electrooptical device according to claim 9 is characterized in that,
First tail optical fiber in the double tail fiber device receives the uplink optical signal that outside optical network unit ONU is sent, export collimating apparatus to, collimate by collimating apparatus and to export the WDM optical filter to after handling, the WDM optical filter reflexes to reflection device, reflection device is reflected back WDM optical filter again, and the WDM optical filter reflects again, exports collimating apparatus to and converges, export second tail optical fiber in the double tail fiber device to, and export the optical-fiber network end to by second tail optical fiber in the double tail fiber device;
The downlink optical signal of optical-fiber network end transmission exports second tail optical fiber in the double tail fiber device to, exports collimating apparatus then to, exports the WDM optical filter after collimating apparatus collimates and handles to:
For non-CATV signal, the WDM optical filter reflexes to reflection device, and reflection device is reflected back WDM optical filter again, the WDM optical filter reflects again, export collimating apparatus to and converge, export first tail optical fiber in the double tail fiber device to, and export ONU to by first tail optical fiber in the double tail fiber device;
For the CATV signal, the WDM optical filter carries out transmission, exports detector to, and detector receives the CATV light signal through the transmission of WDM optical filter, changes electric signal after the processing into, exports user side to from pin.
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| CN201310196552.XA CN103268003B (en) | 2013-05-24 | 2013-05-24 | Photoelectronic device based on wavelength division multiplexing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104166195A (en) * | 2014-08-25 | 2014-11-26 | 珠海保税区光联通讯技术有限公司 | Wavelength division multiplexing filtering optical receiver |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1447141A (en) * | 2002-03-27 | 2003-10-08 | 松下电器产业株式会社 | Photo complexing assembly, lightwave length complexer/decomplexer and mfg. method of photo complexing assembly |
| CN202679371U (en) * | 2012-07-23 | 2013-01-16 | 青岛海信宽带多媒体技术有限公司 | Optical network unit optical assembly with optical time domain reflection function |
| CN202818297U (en) * | 2012-07-23 | 2013-03-20 | 青岛海信宽带多媒体技术有限公司 | Optical network unit photoelectric device with optical time domain reflection function |
| CN103109475A (en) * | 2012-10-15 | 2013-05-15 | 华为技术有限公司 | Single fiber bidirectional optical component and working method thereof |
| CN203414638U (en) * | 2013-05-24 | 2014-01-29 | 青岛海信宽带多媒体技术有限公司 | A photoelectric device based on wavelength division multiplexing |
-
2013
- 2013-05-24 CN CN201310196552.XA patent/CN103268003B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1447141A (en) * | 2002-03-27 | 2003-10-08 | 松下电器产业株式会社 | Photo complexing assembly, lightwave length complexer/decomplexer and mfg. method of photo complexing assembly |
| CN202679371U (en) * | 2012-07-23 | 2013-01-16 | 青岛海信宽带多媒体技术有限公司 | Optical network unit optical assembly with optical time domain reflection function |
| CN202818297U (en) * | 2012-07-23 | 2013-03-20 | 青岛海信宽带多媒体技术有限公司 | Optical network unit photoelectric device with optical time domain reflection function |
| CN103109475A (en) * | 2012-10-15 | 2013-05-15 | 华为技术有限公司 | Single fiber bidirectional optical component and working method thereof |
| CN203414638U (en) * | 2013-05-24 | 2014-01-29 | 青岛海信宽带多媒体技术有限公司 | A photoelectric device based on wavelength division multiplexing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104166195A (en) * | 2014-08-25 | 2014-11-26 | 珠海保税区光联通讯技术有限公司 | Wavelength division multiplexing filtering optical receiver |
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