CN203039695U - 40G PIN/TIA detector - Google Patents
40G PIN/TIA detector Download PDFInfo
- Publication number
- CN203039695U CN203039695U CN 201220709086 CN201220709086U CN203039695U CN 203039695 U CN203039695 U CN 203039695U CN 201220709086 CN201220709086 CN 201220709086 CN 201220709086 U CN201220709086 U CN 201220709086U CN 203039695 U CN203039695 U CN 203039695U
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- lens
- pin
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- waveguide type
- impedance amplifier
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Abstract
The utility model discloses a 40GPIN/TIA detector, which comprises a tube and a trans-impedance amplifier. A lens is arranged in the tube. A waveguide photodiode is arranged on the same level of the lens. The waveguide photodiode is electrically connected with the trans-impedance amplifier. According to the utility model, through the twin-lens collimation and convergence mode, coupling efficiency is raised, stability of coupling responsivity is guaranteed, and reliability of assemblies is improved.
Description
Technical field
The utility model relates to the light receiving element in the optical communication industry, relates in particular to a kind of 40G PIN/TIA detector that adopts the double lens encapsulating structure.
Background technology
In optical transmission system, optical receiver is important part.For single channel 40Gb/s optical transmission system, to 40G PIN/TIA(P-I-N photondiode/Transimpedance amplifier, P-I-N p n junction photodiode/trans-impedance amplifier) performance requirement of detector receiving unit is higher.Light PIN-PD(P-I-N photondiode is advanced in traditional front, photodiode) the structure detector can cause PN junction electric capacity (PN junction capacitance) big and stray capacitance is big, carrier transit time is long, thereby limited its photoresponse speed or bandwidth, so junction capacitance is little, the side of light absorption district thin thickness is advanced optical waveguide type PIN structure and obtained using widely.
The waveguiding structure of waveguide type PIN-PD is small-sized, is generally 3*0.5um, differs bigger with the core size (9um hot spot) of monomode fiber, and coupling efficiency is very low.But because the restriction of waveguide dimensions, the coupling efficiency between receiving unit tail optical fiber and the probe dice becomes the key factor that influences device performance.Though adopted grinding core optical fiber at present, can improve coupling efficiency, its stability of layout is very poor, and reliability is difficult to reach requirement.For addressing these problems, adopt twin-lens coupled modes, both improved coupling efficiency greatly, also strengthened the reliability of light path.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of can improve coupling efficiency greatly, also can strengthen the 40G PIN/TIA detector of the double lens encapsulating structure of light path reliability.
In order to solve the problems of the technologies described above, the utility model provides a kind of 40G PIN/TIA detector, include shell and trans-impedance amplifier, in described shell, be provided with lens, be provided with the waveguide type photodiode with the same horizontal line of described lens, described waveguide type photodiode and trans-impedance amplifier electrically connect.
Further, described lens include front lens and rear lens, described front lens is arranged on the porch of shell, and described rear lens is arranged between waveguide type photodiode and the front lens, and described front lens, rear lens and waveguide type photodiode are arranged on the same horizontal line.
Further, be provided with incident optical in the porch of described shell.
Further, described incident optical is monomode fiber.
Further, described rear lens bottom is provided with fixture.
Further, the connecting line of described waveguide type photodiode and trans-impedance amplifier is spun gold.
Further, described waveguide type photodiode and trans-impedance amplifier arrange on the same horizontal plane.
Further, described waveguide type photodiode and trans-impedance amplifier bottom are provided with horizontal support member.
The utility model has improved coupling efficiency by twin-lens collimation and the mode that converges, has guaranteed the stability of coupling response degree, and then has improved the reliability of assembly.
Description of drawings
Fig. 1 is the structure chart of the utility model 40G PIN/TIA detector one embodiment.
Among the figure, 10. shell, 20. incident opticals, 30. front lenss, 40. rear lenses, 50. fixtures, 60. waveguide type PIN-PD, 70. horizontal support member, 80. spun golds, 90. trans-impedance amplifiers.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the utility model and being implemented, but illustrated embodiment is not as to restriction of the present utility model.
As shown in Figure 1, structure chart for the utility model 40G PIN/TIA detector one embodiment, include shell 10, in described shell 10, be provided with lens, be provided with waveguide type PIN-PD60 with the same horizontal line of described lens, described waveguide type PIN-PD60 and trans-impedance amplifier 90 electrically connect.
Position in described shell 10 outside corresponding shells 10 porch is provided with incident optical 20, and described incident optical 20 is monomode fiber, is used for receiving optical signals, and optical signal transmission is arrived in the shell 10.
In the present embodiment, in shell 10, be provided with two lens, be respectively front lens 30 and rear lens 40,
Described front lens 30 is arranged on the porch of shell 10, and the collimation that described front lens 30 is used for the monomode fiber bright dipping is handled, and is provided with rear lens 40 between described waveguide type PIN-PD60 and front lens 30, and described rear lens 40 is used for converging of front lens 30 bright dippings.Described front lens, rear lens and waveguide type PIN-PD are arranged on the same horizontal line,
For the shaft core position that guarantees front lens 30 and rear lens 40 on same horizontal line, be provided with fixture 50 in the bottom of described rear lens 40, after adjusting to the shaft core position of front lens 30 and rear lens 40 on same the horizontal line, described fixture 50 is fixed rear lens 40.
Described waveguide type PIN-PD60, be used for receiving the light signal that comes through rear lens 40 transmission, and light signal is converted to photo-signal, described waveguide type PIN-PD60 and trans-impedance amplifier 90 electrically connect, in the present embodiment, preferably connect waveguide type PIN-PD60 and trans-impedance amplifier 90 with spun gold 80, be convenient to photo-signal and enter in the trans-impedance amplifier 90, described trans-impedance amplifier 90 is used for the photo-signal conversion, is enlarged into level signal.
For waveguide type PIN-PD60 and trans-impedance amplifier 90 are arranged on same plane, be provided with horizontal support member 70 at described waveguide type PIN-PD60 and trans-impedance amplifier 90 bottoms.
Specific implementation process: at first powering at trans-impedance amplifier 90 adds suitable reversed bias voltage with waveguide type PIN-PD60, incident optical signal enters by incident optical 20, light beam is respectively through the collimation of front lens 30, the effect of converging of rear lens 20, incide on the waveguide PIN-PD60 of survey device into, through waveguide PIN-PD60 light signal is converted to photo-signal then, output photoelectricity flows on the trans-impedance amplifier 90, through conversion and the amplification of trans-impedance amplifier 60, output voltage signal.Under coupling efficiency reached maximal condition, fixedly rear lens 40, front lens 30 and incident optical 20 after incident optical 20 fixes, with shell 10 sealings, guaranteed air-tightness more successively.
The above embodiment is the preferred embodiment that proves absolutely that the utility model is lifted, and protection range of the present utility model is not limited thereto.Being equal to that those skilled in the art do on the utility model basis substitutes or conversion, all within protection range of the present utility model.Protection range of the present utility model is as the criterion with claims.
Claims (8)
1. 40G PIN/TIA detector, include shell and trans-impedance amplifier, it is characterized in that, in described shell, be provided with lens, be provided with the waveguide type photodiode with the same horizontal line of described lens, described waveguide type photodiode and trans-impedance amplifier electrically connect.
2. 40G PIN/TIA detector according to claim 1, it is characterized in that, described lens include front lens and rear lens, described front lens is arranged on the porch of shell, described rear lens is arranged between waveguide type photodiode and the front lens, and described front lens, rear lens and waveguide type photodiode are arranged on the same horizontal line.
3. 40G PIN/TIA detector according to claim 2 is characterized in that, is provided with incident optical in the porch of described shell.
4. 40G PIN/TIA detector according to claim 3 is characterized in that, described incident optical is monomode fiber.
5. 40G PIN/TIA detector according to claim 2 is characterized in that, described rear lens bottom is provided with fixture.
6. 40G PIN/TIA detector according to claim 1 is characterized in that, the connecting line of described waveguide type photodiode and trans-impedance amplifier is spun gold.
7. 40G PIN/TIA detector according to claim 1 is characterized in that, described waveguide type photodiode and trans-impedance amplifier arrange on the same horizontal plane.
8. 40G PIN/TIA detector according to claim 7 is characterized in that, described waveguide type photodiode and trans-impedance amplifier bottom are provided with horizontal support member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220709086 CN203039695U (en) | 2012-12-20 | 2012-12-20 | 40G PIN/TIA detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220709086 CN203039695U (en) | 2012-12-20 | 2012-12-20 | 40G PIN/TIA detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203039695U true CN203039695U (en) | 2013-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220709086 Expired - Lifetime CN203039695U (en) | 2012-12-20 | 2012-12-20 | 40G PIN/TIA detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203039695U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529524A (en) * | 2013-10-21 | 2014-01-22 | 重庆航伟光电科技有限公司 | Optical signal receiving detector and manufacturing method thereof |
| CN105871471A (en) * | 2016-03-28 | 2016-08-17 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN107566045A (en) * | 2017-10-10 | 2018-01-09 | 成都优博创通信技术股份有限公司 | Optical Receivers and optical communication apparatus |
-
2012
- 2012-12-20 CN CN 201220709086 patent/CN203039695U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529524A (en) * | 2013-10-21 | 2014-01-22 | 重庆航伟光电科技有限公司 | Optical signal receiving detector and manufacturing method thereof |
| CN105871471A (en) * | 2016-03-28 | 2016-08-17 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| US10097272B2 (en) | 2016-03-28 | 2018-10-09 | Hisense Broadband Multimedia Technologies Co., Ltd | Optical module |
| US10516484B2 (en) | 2016-03-28 | 2019-12-24 | Hisense Broadband Multimedia Technologies Co., Ltd. | Optical module |
| CN107566045A (en) * | 2017-10-10 | 2018-01-09 | 成都优博创通信技术股份有限公司 | Optical Receivers and optical communication apparatus |
| CN107566045B (en) * | 2017-10-10 | 2023-10-20 | 成都优博创通信技术股份有限公司 | Optical receiving module and optical communication device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |