CN202502275U - Optical transceiver module - Google Patents
Optical transceiver module Download PDFInfo
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- CN202502275U CN202502275U CN2012200259309U CN201220025930U CN202502275U CN 202502275 U CN202502275 U CN 202502275U CN 2012200259309 U CN2012200259309 U CN 2012200259309U CN 201220025930 U CN201220025930 U CN 201220025930U CN 202502275 U CN202502275 U CN 202502275U
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- wavelength
- light signal
- grating
- receiving subassembly
- input window
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Abstract
The utility model provides an optical transceiver module which comprises a laser transmitting unit used for transmitting an optical signal with a wavelength of lambda 1, a first photoelectric conversion unit used for receiving the optical signal with the wavelength of lambda 1 transmitted by the laser transmitting unit and controlling an output power of the laser transmitting unit, and a second photoelectric conversion unit used for receiving an optical signal with a wavelength of lambda 2 transmitted from an optical waveguide, reflecting the optical signal with the wavelength of lambda 1 transmitted by the laser transmitting unit out of the optical transceiver module, and converting the optical signal with the wavelength of lambda 2 into an electric signal. According to the optical transceiver module provided by the utility model, a separate wavelength division filter is not needed, and while production cost is reduced, manufacturing process is simplified.
Description
Technical field
The utility model relates to the optical-fiber network technology, relates to a kind of smooth transmitting-receiving subassembly especially.
Background technology
PLC (Planar Lightwave Circuit; Planar optical waveguide) the type optical transceiver module is a kind of transmission direction that utilizes planar optical waveguide restriction light, with LD (Laser Diode, laser diode), PD (Photo Diode; Photodiode), the optical transceiving device that integrates of wave-division multiplexer filter and optical fiber; Its structure is illustrated in fig. 1 shown below, and wherein to be used for emission wavelength be the flashlight of λ 1 to laser diode, and photodiode is used for receiving the flashlight that wavelength is λ 2; Wave-division multiplexer filter plays the function of wavelength-division multiplex; Being used for wavelength with laser diode emission is that the light signal of λ 1 reflects into optical fiber, and the wavelength that gets into from optical fiber is that the light signal transmission of λ 2 is crossed wave-division multiplexer filter and got into photodiode, realizes the transmission-receiving function of light.The concrete structure that photodiode receives is illustrated in fig. 2 shown below, and the wavelength of exporting in the waveguide is that the light signal transmission of λ 2 is crossed wave-division multiplexer filter and entered into photodiode, reflexes to the photosensitive area of photodiode through the inclined-plane on the photodiode.
In the real world applications; Wave-division multiplexer filter in the PLC light transmitting-receiving subassembly needs to be installed on the PLC platform behind making, the well cutting separately again; Increased the process procedure that PLC light transmitting-receiving subassembly is made, the requirement that brings wave filter placement location precision has increased the production cost of PLC light transmitting-receiving subassembly.
The utility model content
To the problems referred to above, the utility model embodiment provides the light transmitting-receiving subassembly that a kind of manufacture craft is simple, production cost is lower.
The utility model provides a kind of smooth transmitting-receiving subassembly, comprising: laser emission element is used for the light signal that emission wavelength is λ 1; First photoelectric conversion unit, the wavelength that is used to receive said laser emission element emission is the light signal of λ 1, and the output power of said laser emission element is controlled; Second photoelectric conversion unit; Being used for receiving the wavelength that comes from the optical waveguide transmission is the light signal of λ 2; With the wavelength of said laser emission element emission is that the light signal of λ 1 reflects said smooth transmitting-receiving subassembly through optical waveguide, is that the light signal of λ 2 converts electric signal to wavelength.
The utility model also provides another kind of light transmitting-receiving subassembly, comprising: laser diode is used for the light signal that emission wavelength is λ 1; First photodiode, the wavelength that is used to receive said laser diode emission is the light signal of λ 1, and the output power of said laser diode is controlled; Second photodiode; Being used for receiving the wavelength that comes from the optical waveguide transmission is the light signal of λ 2; With the wavelength of said laser diode emission is that the light signal of λ 1 reflects said smooth transmitting-receiving subassembly through optical waveguide, is that the light signal of λ 2 converts electric signal to wavelength.
The light transmitting-receiving subassembly that the utility model provides is integrated in the wavelength-division multiplex filter function on second photoelectric conversion unit, does not need independent divided waveplate filter, has reduced the process procedure of making, and has reduced cost.
Description of drawings
The structural representation of the light transmitting-receiving subassembly that Fig. 1 provides for prior art;
The structural representation of the photodiode that is applicable to planar type optical waveguide light transmitting-receiving subassembly that Fig. 2 provides for prior art;
The structural representation of the light transmitting-receiving subassembly that Fig. 3 provides for the utility model embodiment;
The side view of the photoelectric conversion unit that Fig. 4 provides for the utility model embodiment;
The vertical view of the photoelectric conversion unit that Fig. 5 provides for the utility model embodiment.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer, the utility model is done further explain below in conjunction with accompanying drawing.At this, illustrative examples of the utility model and explanation thereof are used to explain the utility model, but not as the qualification to the utility model.
The light transmitting-receiving subassembly that the utility model embodiment provides comprises laser emission element, first photoelectric conversion unit, second photoelectric conversion unit and pedestal; Compare with conventional P LC type optical module; The light transmitting-receiving subassembly that the utility model embodiment provides does not have independent wave-division multiplexer filter, and the wavelength-division multiplex filter function is integrated among second photoelectric conversion unit.
Particularly; The light transmitting-receiving subassembly that the utility model embodiment provides; As shown in Figure 3; Said smooth transmitting-receiving subassembly 300 can be the light transmitting-receiving subassembly of reception/emission light signal in optical line terminal or the optical network unit, comprises laser emission element 301, first photoelectric conversion unit 302, second photoelectric conversion unit 303 and pedestal 304, and said laser emission element 301, first photoelectric conversion unit 302 and second photoelectric conversion unit 303 all are arranged on the pedestal 304.
First photoelectric conversion unit 302; Can be photodiode, being used to receive the wavelength that laser emission element 301 sends is the light signal of λ 1, with the output power of monitoring laser transmitter unit 301; Laser emission element is controlled in real time, guaranteed the stable of its output power.
Second photoelectric conversion unit 303; Be integrated with the wavelength-division multiplex filter function; Can be photodiode; Being used to receive the wavelength that comes from waveguide is the light signal of λ 2, with laser emission element 301 emissions, wavelength be the light signals of λ 1 along wave guide direction reflection bright dipping transmitting-receiving subassembly 300, be that the light signal of λ 2 converts electric signal to wavelength.
Wherein, The back of incidence window that is integrated with second photoelectric conversion unit 303 of wavelength-division multiplex filter function is etched with the grating of row's fluted body periodic structure; The groove width of said periodic structure grating, gap periods and periodicity will satisfy certain requirement; To realize the function of wavelength-division multiplex filtering, make the light signal of the specific wavelength that photodiode need receive see through grating, reflect the light of other wavelength simultaneously.
Particularly, the structure of second photoelectric conversion unit 303 that the utility model embodiment provides such as Fig. 4 and shown in Figure 5, it comprises input window 303-1, grating 303-2, catoptron 303-3 and photosurface 303-4;
Input window 303-1 is used for receiving and is mapped to second photoelectric conversion unit, 303 wavelength optical signals;
Grating 303-2; The wavelength that is used for will getting into from input window 303-1, second photoelectric conversion unit, 303 needs receive is that said second photoelectric conversion unit 303 is advanced in the light signal transmission of λ 2, and the wavelength that need not receive said second photoelectric conversion unit 303 simultaneously is that the light signal of λ 1 reflects away;
Catoptron 303-3, be used to receive transmission is handled through grating 303-2 wavelength and be the light signal of λ 2 and with its internal reflection to photosurface 303-4;
Photosurface 303-4, being used to receive the wavelength that reflects from catoptron 303-3 is the light signal of λ 2, and is that the light signal of λ 2 carries out opto-electronic conversion to said wavelength;
Wherein, after grating 303-2 is positioned at input window 303-1, and keep suitable distance with input window 303-1; Expansion Shu Yuanli according to Gaussian beam; Distance between grating 303-2 and the input window 303-1 should be lacked as far as possible, but can not be too short, otherwise damages input window 303-1 easily; In the present embodiment, the distance between grating 303-2 and the input window 303-1 is 10-20 μ m.
Grating 303-2 is the fluted body grating that a row has periodic structure, and the groove width of said fluted body grating, gap periods and periodicity can be confirmed according to the refractive index of packing material in the refractive index of wavelength X 2, second photoelectric conversion unit, 303 substrates, the groove, incident angle, the peak width of second photoelectric conversion unit, 303 substrates and the efficiency of transmission of grating that light signal gets into input window 303-1.Wherein, The substrate of above-mentioned second photoelectric conversion unit 303 can be an indium phosphide, and the packing material in the above-mentioned groove can be an air, also can be the matching fluid with specific refractive index; Therefore, the refractive index of packing material can change to arbitrary value from 1 in the above-mentioned groove.Among the embodiment that the utility model provides, the cycle of above-mentioned fluted body grating 303-2 can be the integral multiple of 1/4th λ 2, and above-mentioned light signal can be 8 degree from the incident angle that input window 303-1 gets into second photoelectric conversion unit 303.
Wavelength is that mixed light signal and the wavelength that reflects through grating 302-2 of λ 1 and λ 2 is that the light signal of λ 1 is in the same surface level; And certain included angle is arranged between the two; Among the utility model embodiment; Angle between the two is 8 degree, and the wavelength that therefore in the side view of Fig. 4, grating 302-2 is reflected is the light signal with dashed lines sign of λ 1.
The light transmitting-receiving subassembly that the utility model embodiment provides comprises laser emission element, first photoelectric conversion unit and second photoelectric conversion unit; Wherein, Second photoelectric conversion unit is integrated with the wavelength-division multiplex filter function; Be second photoelectric conversion unit that uses in the light transmitting-receiving subassembly that provides of the utility model embodiment integrated the wavelength-division multiplex filter function of wave-division multiplexer filter in PLC light transmitting-receiving subassembly shown in Figure 1, so, in PLC light transmitting-receiving subassembly, can not need re-use wave-division multiplexer filter; Thereby realized the simplification of structure, the minimizing of manufacture craft link and the reduction of cost of manufacture.
The above; Be merely the preferable embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain of claim.
Claims (12)
1. a light transmitting-receiving subassembly is characterized in that, comprising:
Laser emission element is used for the light signal that emission wavelength is λ 1;
First photoelectric conversion unit, the wavelength that is used to receive said laser emission element emission is the light signal of λ 1, and the output power of said laser emission element is controlled;
Second photoelectric conversion unit; Being used for receiving the wavelength that comes from the optical waveguide transmission is the light signal of λ 2; With the wavelength of said laser emission element emission is that the light signal of λ 1 reflects said smooth transmitting-receiving subassembly through optical waveguide, is that the light signal of λ 2 converts electric signal to wavelength.
2. smooth transmitting-receiving subassembly as claimed in claim 1 is characterized in that, said second photoelectric conversion unit comprises input window, grating, catoptron and photosurface;
After said grating is positioned at said input window, keep at a distance with said input window;
Said input window is used for receiving and is mapped to the second photoelectric conversion unit wavelength optical signals;
Said grating; Be used for and will advance said second photoelectric conversion unit from the light signal transmission that said input window wavelength that get into, that said second photoelectric conversion unit need receive is λ 2, the wavelength that need not receive said second photoelectric conversion unit simultaneously is that the light signal of λ 1 reflects away;
Said catoptron, being used to receive the wavelength of handling through said grating transmission is the light signal of λ 2, and it is reflexed to said photosurface;
Said photosurface, being used to receive the wavelength that comes from said mirror reflects is the light signal of λ 2, converts thereof into electric signal.
3. smooth transmitting-receiving subassembly as claimed in claim 2 is characterized in that, the distance between said grating and the said input window is 10-20 μ m.
4. smooth transmitting-receiving subassembly as claimed in claim 2 is characterized in that, said grating is the fluted body grating that a row has periodic structure.
5. smooth transmitting-receiving subassembly as claimed in claim 4 is characterized in that, the cycle of said fluted body grating is the integral multiple of quarter-wave λ 2, and the angle that said light signal gets into said input window is an octave.
6. smooth transmitting-receiving subassembly as claimed in claim 1 is characterized in that, said smooth transmitting-receiving subassembly can be applied at least a in optical line terminal or the optical network unit.
7. a light transmitting-receiving subassembly is characterized in that, comprising:
Laser diode is used for the light signal that emission wavelength is λ 1;
First photodiode, the wavelength that is used to receive said laser diode emission is the light signal of λ 1, and the output power of said laser diode is controlled;
Second photodiode; Being used for receiving the wavelength that comes from the optical waveguide transmission is the light signal of λ 2; With the wavelength of said laser diode emission is that the light signal of λ 1 reflects said smooth transmitting-receiving subassembly through optical waveguide, is that the light signal of λ 2 converts electric signal to wavelength.
8. smooth transmitting-receiving subassembly as claimed in claim 7 is characterized in that, said second photodiode comprises input window, grating, catoptron and photosurface;
After said grating is positioned at said input window, keep at a distance with said input window;
Said input window is used for receiving and is mapped to the said second photodiode wavelength optical signals;
Said grating; Be used for and will advance said second photodiode from the light signal transmission that said input window wavelength that get into, that said second photodiode need receive is λ 2, the wavelength that need not receive said second photodiode simultaneously is that the light signal of λ 1 reflects away;
Said catoptron, being used to receive the wavelength of handling through said grating transmission is the light signal of λ 2, and it is reflexed to said photosurface;
Said photosurface, being used to receive the wavelength that comes from said mirror reflects is the light signal of λ 2, converts thereof into electric signal.
9. smooth transmitting-receiving subassembly as claimed in claim 8 is characterized in that, the distance between said grating and the said input window is 10-20 μ m.
10. like the said smooth transmitting-receiving subassembly of claim 8, it is characterized in that said grating is the fluted body grating that a row has periodic structure.
11. smooth transmitting-receiving subassembly as claimed in claim 10 is characterized in that, the cycle of said fluted body grating is the integral multiple of quarter-wave λ 2, and the angle that light signal gets into said incidence window is an octave.
12. smooth transmitting-receiving subassembly as claimed in claim 7 is characterized in that, said smooth transmitting-receiving subassembly can be applied at least a in optical line terminal or the optical network unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200259309U CN202502275U (en) | 2012-01-19 | 2012-01-19 | Optical transceiver module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200259309U CN202502275U (en) | 2012-01-19 | 2012-01-19 | Optical transceiver module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202502275U true CN202502275U (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200259309U Expired - Lifetime CN202502275U (en) | 2012-01-19 | 2012-01-19 | Optical transceiver module |
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| Country | Link |
|---|---|
| CN (1) | CN202502275U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021003664A1 (en) * | 2019-07-09 | 2021-01-14 | Source Photonics (Chengdu) Company Limited | Optical transceiver and methods of making and using the same |
-
2012
- 2012-01-19 CN CN2012200259309U patent/CN202502275U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021003664A1 (en) * | 2019-07-09 | 2021-01-14 | Source Photonics (Chengdu) Company Limited | Optical transceiver and methods of making and using the same |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121024 |