CN205157844U - Parallel light -receiving subassembly and optical module of multichannel wavelength - Google Patents
Parallel light -receiving subassembly and optical module of multichannel wavelength Download PDFInfo
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- CN205157844U CN205157844U CN201520843014.XU CN201520843014U CN205157844U CN 205157844 U CN205157844 U CN 205157844U CN 201520843014 U CN201520843014 U CN 201520843014U CN 205157844 U CN205157844 U CN 205157844U
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- 230000003287 optical effect Effects 0.000 title claims abstract description 12
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- 239000007924 injection Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 abstract description 10
- 238000010168 coupling process Methods 0.000 abstract description 10
- 238000005859 coupling reaction Methods 0.000 abstract description 10
- 239000003292 glue Substances 0.000 abstract description 3
- 238000005538 encapsulation Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 230000035945 sensitivity Effects 0.000 description 2
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- 230000001186 cumulative effect Effects 0.000 description 1
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- 238000002834 transmittance Methods 0.000 description 1
Abstract
The utility model discloses a parallel light -receiving subassembly and optical module of multichannel wavelength is provided with collimating lens, wavelength devision multiplex closes ripples / partial wave module, a plurality of focus coupling lens and a plurality of photoelectric detector in the subassembly, through the focus coupling lens that adopt two kinds and above different focuses, make a plurality of focus coupling lens close position along crisscross change the in light path direction emergence front and back between ripples / partial wave module and a plurality of photoelectric detector at wavelength devision multiplex, when satisfying the coupling of multichannel light path, avoided position interference or coupling space between a plurality of focus coupling lens limited, and lens are when fixed respectively, solidification spills over the space that glue influences the adjacent lens coupling of epilogue below the preorder lens, make the miniaturized encapsulation of subassembly and module become more simple and convenient.
Description
Technical field
The utility model relates to technical field of photo communication, particularly a kind of for multichannel wavelength channels walk abreast receive optical fiber receive module and the integrated module of optical transceiver.
Background technology
At present, high speed optical communication module presents the features such as miniaturization, low-power consumption, hot plug, the concurrent working of multichannel wavelength.Along with the continuous dilatation of optical communication transferring content, transfer rate and shared passage constantly increase, in order to solve produced problem thereupon, comparatively popular way is that the wavelength-division multiplex utilizing optical waveguide principle or Thin Film Filter principle to make multi-path light communication needs closes wave separater module.There is higher temperature sensitivity and larger loss due to it in waveguide component, more general to be at present used to light power budget enough large and possess in the multi-path light emitting module of temperature regulating device TEC; The wavelength-division multiplex that another based thin film optical filter principle makes closes wave separater module then because its temperature sensitivity is low, and the features such as loss is little, are widely used in the optical fiber receive module of cost control requirement relatively much higher road at present.
Fig. 1 illustrates current conventional multichannel (for 4 tunnels) optical fiber receive module light path: the input beam from optical fiber 110 enters wavelength-division multiplex by collimation lens 120 and closes ripple/partial wave module 130, and after multiple reflections via left side reflector space, inject 4 wavelength diaphragms 131 of conjunction ripple/partial wave module 130 respectively, 132, 133, in 134, and then be separated into the light beam of 4 road different wave lengths, by focus lens assembly 140 (or by discrete lens 141, 142, 143, 144 compositions) focus on four photodetectors 151 in photodetector assembly 150 respectively, 152, 153, on 154, four road light signals are converted to four road electric signal by photodetector, realize the reception of data.In actual product application, due to the consideration of cost aspect, photodetector assembly seldom adopts the mode of array element, and according to discrete 4 photodetectors, the accuracy that its position is fixing, closing the ripple/orientation consistency of partial wave module four road emergent light and the cumulative errors of channel spacing adopts the mode of lens arra to apply restriction focus lens assembly 140, because like that the exception that makes light path be coupled to become is difficult and yield rate is very low.Therefore discrete lens element adds that discrete photodetector is the mainstream scheme of current multichannel wavelength parallel optic-fiber receiver assembly.
But discrete lens element can bring a unavoidable problem, after that is coupled exactly and fixes what a lens, be coupled again the lens of an adjacency channel next time, clamping and the couple movement of one side lens need dodge the lens fixed above, if if the lens fixed that are coupled above on the other hand have glue or solder to overflow, likely can have influence on following lenses coupled room thus to the optimum coupling position not reaching following lenses.
Summary of the invention
For overcoming above shortcoming, the utility model proposes a kind of focusing coupled lens adopting two kinds and above different focal, the position making multiple focusing coupled lens close ripple/between partial wave module and multiple photodetector at wavelength-division multiplex is staggered front to back change, while meeting Manifold Light Way coupling, avoid the location conflicts between multiple focusing coupled lens or coupled room is limited and lens are fixed respectively time, the glue solidified under preorder lens affects the space of postorder adjacent lens coupling, makes the small-sized encapsulated of assembly become more simple and convenient.
For reaching above goal of the invention, the utility model adopts following technical scheme:
The optical fiber receive module that multichannel wavelength is parallel, comprises wavelength-division multiplex conjunction ripple/partial wave module, a collimation lens and the optical fiber of N number of photodetector, N number of focusing coupled lens, a 1xN passage; It is characterized in that described N number of focusing coupled lens is staggered front to back placement along respective light path; N number of partial wave passage side that described wavelength-division multiplex closes ripple/partial wave module is disposed adjacent with N number of focusing coupled lens, and 1 is closed ripple passage and is disposed adjacent with collimation lens; The light signal of optical fiber input injects via collimation lens the conjunction ripple passage that wavelength-division multiplex closes ripple/partial wave module, and in N number of partial wave passage injection, inciding in N number of focusing coupled lens correspondingly, be coupled into N number of photodetector respectively by focusing on coupled lens, and conversion generating electric signal.
Further, described N number of focusing coupled lens has 2 kinds and the above different focal lengths of lens, ensures that N number of photodetector can be arranged in a linear and fix.
Further, N number of partial wave passage that described wavelength-division multiplex closes ripple/partial wave module is realized by the logical film filtering of band, have appointment incident angle under to the incident light transmission of specific wavelength the characteristic of the reflected incident light to its commplementary wave length, need satisfied certain insulated degree requirement between different channel wavelength.
In addition, the utility model also proposed a kind of optical module, and the inside is provided with the parallel optical fiber receive module of foregoing multichannel wavelength.
Preferably, described N is more than or equal to 2.
Accompanying drawing explanation
Fig. 1 is multichannel wavelength parallel optic-fiber receiver assembly schematic diagram conventional at present;
Fig. 2 is multichannel wavelength parallel optic-fiber receiver assembly schematic diagram of the present utility model;
Embodiment
The utility model most preferred embodiment is described in detail below in conjunction with accompanying drawing 2.Obviously, described embodiment is only a part of embodiment in the utility model, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making other embodiments all obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The optical fiber receive module that a kind of multichannel wavelength of the utility model is parallel, comprise the wavelength-division multiplex conjunction ripple/partial wave module (the present embodiment is described for N=4) 130 of optical fiber 110, collimation lens 120,1xN passage, comprise 131,132,133 and 134,4,4 wavelength diaphragms and focus on coupled lens 145,146,147 and 148,4 photodetectors 151,152,153 and 154; Inject with angle θ the left side total transmissivity passage that wavelength-division multiplex closes ripple/partial wave module after the light signal (light signals containing 4 wavelength) that optical fiber 110 inputs collimates via collimation lens 120, and first arrive first wavelength diaphragm 131, the light beam consistent with the transmission peak wavelength of 131 for light signal medium wavelength transmits by 131, directive focuses on coupled lens 145, the beam reflection of its commplementary wave length on the reflector space face closed on the left of ripple/partial wave module 130, and then is reflexed on second wavelength diaphragm 132 by reflector space face.Described second wavelength diaphragm 132 pairs of light signal medium wavelengths light beam consistent with the transmission peak wavelength of 132 carries out transmission, and then directive second focuses on coupled lens 146, the light beam of its commplementary wave length reflexes on the reflector space face on the left of conjunction ripple/partial wave module 130 again, and then is reflexed on the 3rd wavelength diaphragm 133 by reflector space face.By that analogy, under including the transmittance and reflectance effect of the reflector space face of light signal on the left of four wavelength diaphragms 131 ~ 134 and conjunction ripple/partial wave module 130 of 4 wavelength, be separated into the light beam of 4 road different wave lengths, by four wavelength diaphragms respectively transmission export to four focus on coupled lens 145 ~ 148, and then after focusing on coupled lens focusing via 4, correspondence is coupled into 4 photodetectors 151 ~ 154, to convert 4 road electric signal to, transfer to the circuit board of rear class, just complete the reception of 4 road light signals thus.
Interfere and the problem such as technique for fixing difficulty to solve coupled room between adjacent two passage coupled lens, we take adjacency channel coupled lens is staggered front to back layout mode along respective light path; Further, before and after lens, place the photoelectric probe position brought follow change and then affect circuit Joining Technology and radio-frequency performance, we have employed the focusing coupled lens of two kinds of different focal, 145 and 147 there is common relatively long focal length in described embodiment above, and 146 and 148 has identical relatively short focal length.So just can realize 4 coupled lens to be staggered front to back along optical path direction and to place and ensure that 4 photodetectors are arranged in a linear, thus the coupled room avoiding adjacency channel lens is interfered and the problem such as technique for fixing difficulty.The small-sized encapsulated of assembly is made to become more simple and convenient.
Claims (5)
1. the optical fiber receive module that multichannel wavelength is parallel, comprises wavelength-division multiplex conjunction ripple/partial wave module, a collimation lens and the optical fiber of N number of photodetector, N number of focusing coupled lens, a 1xN passage; It is characterized in that described N number of focusing coupled lens is staggered front to back placement along respective light path; N number of partial wave passage side that described wavelength-division multiplex closes ripple/partial wave module is disposed adjacent with N number of focusing coupled lens, and 1 is closed ripple passage and is disposed adjacent with collimation lens; The light signal of optical fiber input injects via collimation lens the conjunction ripple passage that wavelength-division multiplex closes ripple/partial wave module, and in N number of partial wave passage injection, inciding in N number of focusing coupled lens correspondingly, be coupled into N number of photodetector respectively by focusing on coupled lens, and conversion generating electric signal.
2. the optical fiber receive module that a kind of multichannel wavelength according to claim 1 is parallel, is characterized in that: described N number of focusing coupled lens has 2 kinds and the above different focal lengths of lens, thus ensures that N number of photodetector can be arranged in a linear and fix.
3. the optical fiber receive module that a kind of multichannel wavelength according to claim 1 is parallel, it is characterized in that: N number of partial wave passage that described wavelength-division multiplex closes ripple/partial wave module is realized by the logical film filtering of band, there is under appointment incident angle the characteristic of the reflected incident light to its commplementary wave length to the incident light transmission of specific wavelength, need between different channel wavelength to meet and be not less than the insulated degree requirement of 20dB.
4. an optical module, is characterized in that: be provided with the optical fiber receive module that the multichannel wavelength any one of claim 1 or 2 as described in claim walks abreast.
5. optical module according to claim 4, is characterized in that: described N is more than or equal to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520843014.XU CN205157844U (en) | 2015-10-28 | 2015-10-28 | Parallel light -receiving subassembly and optical module of multichannel wavelength |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520843014.XU CN205157844U (en) | 2015-10-28 | 2015-10-28 | Parallel light -receiving subassembly and optical module of multichannel wavelength |
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| CN205157844U true CN205157844U (en) | 2016-04-13 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866904A (en) * | 2016-05-23 | 2016-08-17 | 宁波环球广电科技有限公司 | Multichannel parallel optical receiving device |
| CN107241143A (en) * | 2017-07-28 | 2017-10-10 | 成都优博创通信技术股份有限公司 | Optical Receivers and optical mode block assembly |
| CN108107515A (en) * | 2017-12-18 | 2018-06-01 | 武汉电信器件有限公司 | Multi-channel parallel ballistic device |
| CN108957612A (en) * | 2018-07-26 | 2018-12-07 | 北极光电(深圳)有限公司 | A kind of film filter component and preparation method thereof |
| CN111025494A (en) * | 2019-12-19 | 2020-04-17 | 宁波环球广电科技有限公司 | Novel CWDM TOSA structure and manufacturing method thereof |
| CN111722330A (en) * | 2020-06-24 | 2020-09-29 | 武汉英飞光创科技有限公司 | Optical module packaging method, optical module and optical transmitter |
| CN114070414A (en) * | 2021-11-09 | 2022-02-18 | 中国电子科技集团公司第二十九研究所 | Multichannel radio frequency light receiving arrangement |
-
2015
- 2015-10-28 CN CN201520843014.XU patent/CN205157844U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866904A (en) * | 2016-05-23 | 2016-08-17 | 宁波环球广电科技有限公司 | Multichannel parallel optical receiving device |
| TWI616695B (en) * | 2016-05-23 | 2018-03-01 | 寧波環球廣電科技有限公司 | Multi-lane parallel optical receiving device |
| CN107241143A (en) * | 2017-07-28 | 2017-10-10 | 成都优博创通信技术股份有限公司 | Optical Receivers and optical mode block assembly |
| CN108107515A (en) * | 2017-12-18 | 2018-06-01 | 武汉电信器件有限公司 | Multi-channel parallel ballistic device |
| CN108107515B (en) * | 2017-12-18 | 2019-10-18 | 武汉电信器件有限公司 | Multi-channel parallel ballistic device |
| CN108957612A (en) * | 2018-07-26 | 2018-12-07 | 北极光电(深圳)有限公司 | A kind of film filter component and preparation method thereof |
| CN111025494A (en) * | 2019-12-19 | 2020-04-17 | 宁波环球广电科技有限公司 | Novel CWDM TOSA structure and manufacturing method thereof |
| CN111722330A (en) * | 2020-06-24 | 2020-09-29 | 武汉英飞光创科技有限公司 | Optical module packaging method, optical module and optical transmitter |
| CN114070414A (en) * | 2021-11-09 | 2022-02-18 | 中国电子科技集团公司第二十九研究所 | Multichannel radio frequency light receiving arrangement |
| CN114070414B (en) * | 2021-11-09 | 2023-04-11 | 中国电子科技集团公司第二十九研究所 | Multichannel radio frequency light receiving arrangement |
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Effective date of registration: 20240315 Address after: Room 601 and 701, North Block, Yuanxing Technology Building, No.1 Songpingshan Road, High tech Industrial Park (North District), Nanshan District, Shenzhen, Guangdong Province, 518057 Patentee after: Longmet Communication Technology (Shenzhen) Co.,Ltd. Country or region after: China Address before: 518000, No. 8 Keji South 12th Road, Nanshan District, Shenzhen, Guangdong Province Patentee before: NEOPHOTONICS Corp. Country or region before: China |