CN203573001U - Optical module with polarization wave combination - Google Patents
Optical module with polarization wave combination Download PDFInfo
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- CN203573001U CN203573001U CN201320701329.1U CN201320701329U CN203573001U CN 203573001 U CN203573001 U CN 203573001U CN 201320701329 U CN201320701329 U CN 201320701329U CN 203573001 U CN203573001 U CN 203573001U
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- light signal
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- composite wave
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- 230000003287 optical effect Effects 0.000 title claims abstract description 73
- 230000010287 polarization Effects 0.000 title claims abstract description 70
- 239000002131 composite material Substances 0.000 claims description 32
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000003780 insertion Methods 0.000 abstract description 3
- 230000037431 insertion Effects 0.000 abstract description 3
- 239000013307 optical fiber Substances 0.000 description 6
- 238000004891 communication Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
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Abstract
The utility model relates to an optical module with polarization wave combination, which comprises a first optical signal generator to a fourth optical signal generator, a first wave sheet, a second wave sheet, a first polarization wave combination lens, a second polarization wave combination lens, a reflector, and a wavelength multiplexing film. The first, the second, the third and the fourth optical signal generators respectively send optical signals with increasing wavelengths which in sequence are first optical signals, second optical signals, third optical signals and fourth optical signals; the first wave sheet enables the polarization direction of the first optical signals to rotate for 90 DEG; the second wave sheet enables the polarization direction of the third optical signals to rotate for 90 DEG; the first polarization wave combination lens carries out multiplexing on the first optical signals and the second optical signals after polarization directions rotate for 90 DEG; and the second polarization wave combination lens carries out multiplexing on the third optical signals and the fourth optical signals after polarization directions rotate for 90 DEG. The optical module with polarization wave combination has the advantages that insertion loss is small, the wavelength multiplexing film is easy to coat, the cost is lower and the like.
Description
Technical field
The utility model relates to optical fiber communication technology field, relates in particular to the optical module of a kind of polarized composite wave in optical fiber communication technology field.
Background technology
Due to optical-fibre communications development rapidly, along with the lifting of simple optical fiber transmission capacity requirements (as transmission of video image etc.), directly require the maximum width that utilizes optical fiber.Wavelength-division multiplex (WDM) technology is for improving one of gordian technique of transmission capacity.A plurality of light signals that wdm system differs from one another to each wavelength carry out multiplexed.In recent years, require the WDMization of optical module, for example, as for thering is the TOSA of the optical module of the light emission component that carries out wavelength multiplexing in conjunction with the light signal of the different wave length that sends from a plurality of light sources, known have four CAN packaging parts that hold LD (laser diode) are formed a line and the TOSA that configures to equidirectional.On the other hand, in recent years, required the further miniaturization of the optical modules such as light T-R.For example, requiring with the T-R specification of the optical fiber connecting corresponding to 40 ~ 100GbE is QSFP+(QuadSmall Form-factor Pluggable Plus) corresponding small light T-R, the small light T-R that especially requires WDM to use.
According to the draft of the LAN-WDM standard of drafting, to have respectively four light signals that transmission speed that each wavelength is 25Gbps and frequency range are 800GHz carry out multiplexed, to realize the transmission capacity of 100Gbps.The wavelength of corresponding light signal is 1295.56nm, 1300.05nm, 1304.58nm, 1309.14nm.The optical transceiver of stipulating in LAN-WDM draft has the external dimensions of following CFP (100G plug type) multi-source agreement (MSA).Yet, be starved of the size and the cost that further reduce optical transceiver, so as communication facilities middle-high density optical transceiver is installed.
At present, the optical module of existing a kind of multi-wavelength multiplex as shown in Figure 1, by 21,22,23,24 4 optical signal multiplexers of light signal.Specific as follows: light signal 21, after 61 reflections of wavelength-division multiplex diaphragm, is light signal 611; Wavelength-division multiplex diaphragm 62 multiplexing optical signals 22 and light signal 611 are light signal 621; Wavelength-division multiplex diaphragm 63 multiplexing optical signals 23 and light signal 621 are light signal 631; Wavelength-division multiplex diaphragm 64 multiplexing optical signals 24 and light signal 631, be light signal 641, finally four optical multiplexed signals used together.But because the wavelength interval of four light signals is very narrow, to such an extent as to cause wavelength- division multiplex diaphragm 61,62,63,64 plated films very difficult, cost is high, domestic plated film producer cannot realize.Even these commercial wavelength-division multiplex diaphragms, its passband width is very narrow, very high to incident angle susceptibility, and insertion loss is very large.
The advantages such as it is little that the optical module of a kind of polarized composite wave that the utility model provides has Insertion Loss, and wavelength multiplexing diaphragm plated film is easy, and performance is better, and cost is lower.
Summary of the invention
The purpose of this utility model is to provide a kind of optical module of polarized composite wave, adopts the simplest a kind of film coating mode, and the ingenious difference of utilizing two polarization states of diaphragm to see through characteristic, realizes multipath light signal multiplexing, significantly reduces plated film difficulty, reduces costs simultaneously.
For achieving the above object, the technical solution of the utility model is: a kind of optical module of polarized composite wave, it is characterized in that: comprise the first optical signal generator, the second optical signal generator, the 3rd optical signal generator, the 4th optical signal generator, the first wave plate, the second wave plate, the first polarized composite wave prism, the second polarized composite wave prism, catoptron and wavelength multiplexing diaphragm;
Described the first optical signal generator to the four optical signal generators send respectively the light signal with the wavelength that differs from one another, and described light signal by wavelength from being short to long sequence is: the first light signal, the second light signal, the 3rd light signal, the 4th light signal;
Described the first wave plate is by the polarization direction 90-degree rotation of the first light signal;
Described the second wave plate is by the polarization direction 90-degree rotation of the 3rd light signal;
Described the first polarized composite wave prism is by generation the first multiplexed optical signals for the first optical multiplexed signal after the second light signal and polarization direction 90-degree rotation;
The second described polarized composite wave prism is by generation the second multiplexed optical signals for the 3rd optical multiplexed signal after the 4th light signal and polarization direction 90-degree rotation;
Described wavelength multiplexing diaphragm, by the first light signal, the second light signal, the 3rd light signal and the 4th light signal are synthesized to a road.
Further, after described the first light signal and the 3rd light signal polarization direction 90-degree rotation, be S polarization.
Further, described the second light signal and the 4th light signal are P polarization.
Further, the multiplexing polarization state of described the first polarized composite wave prism is the first light signal of S polarization and the second light signal that polarization state is P polarization.
Further, the multiplexing polarization state of described the second polarized composite wave prism is the 3rd light signal of S polarization and the 4th light signal that polarization state is P polarization.
Further, described wavelength multiplexing diaphragm, in S polarization state, transmission the first light signal, reflection the 3rd light signal; In P polarization state, transmission the second light signal, reflection the 4th light signal.
Compared to prior art, the utlity model has following beneficial effect:
1, the utility model utilizes two polarization states of diaphragm to see through the difference of characteristic, makes S polarization state wherein close the first light signal and the 3rd light signal of ripple, can be by the second light signal scope as zone of transition; Equally, P polarization state is closed the second light signal and the 4th light signal of ripple, can be equivalent to wavelength interval to elongate one times by the 3rd light signal scope as zone of transition, and the multipath light signal of having realized intensive wavelength interval is multiplexing;
2, make large incident angle close ripple wavelength multiplexing diaphragm, become a reality;
3, simultaneously, because realize wide-angle incident, close ripple, significantly reduce optical path length, coupling loss reducing and thermal stability are improved.
Accompanying drawing explanation
Fig. 1 is the optical module of existing a kind of multi-wavelength multiplex.
The optical module of a kind of polarized composite wave of Fig. 2 the utility model embodiment.
The light transmission of the wavelength multiplexing diaphragm in the optical module of a kind of polarized composite wave of Fig. 3 the utility model embodiment.
Embodiment
For above-mentioned feature and advantage of the present utility model can be become apparent, special embodiment below, and coordinate accompanying drawing, be described in detail below.
As shown in Figure 2, the utility model relates to a kind of optical module of polarized composite wave, comprise the first optical signal generator, the second optical signal generator, the 3rd optical signal generator, the 4th optical signal generator, the first wave plate 21, the second wave plate 22, the first polarized composite wave prisms 31, the second polarized composite wave prism 32, catoptron 41 and wavelength multiplexing diaphragm 51;
Described the first optical signal generator to the four optical signal generators send respectively the light signal with the wavelength that differs from one another, and described light signal by wavelength from being short to long sequence is: the first light signal 11, the second light signal 12, the three light signal 13, the four light signals 14.
Its specific implementation process is as follows:
The polarization state of the first light signal 11 is P polarization state, and the first light signal 11 by the polarization direction 90-degree rotation of the first light signal 11, becomes S polarization by the polarization state of light signal 11 from P polarization through the first wave plate 21, the first wave plates 21, and light signal is 211; It is the light signal 211 of S polarization that light signal 211 and the second light signal 12 enter respectively the first polarized composite wave prism 31, the first polarized composite wave prism 31 polarization by reflection states, and transmission-polarizing state is the second light signal 12 of P polarization, is multiplexed with light signal 311.
The polarization state of the 3rd light signal 13 is P polarization state, and the 3rd light signal 13 by the polarization direction 90-degree rotation of the 3rd light signal 13, becomes S polarization by the polarization state of light signal 13 from P polarization through the second wave plate 22, the second wave plates 22, and light signal is 221; It is the light signal 221 of S polarization that light signal 221 and the 4th light signal 14 enter respectively the second polarized composite wave prism 32, the second polarized composite wave prism 32 polarization by reflection states, and transmission-polarizing state is the 4th light signal 14 of P polarization, is multiplexed with light signal 321; Light signal 321 is light signal 411 after catoptron 41 reflections.
Light signal 311 and light signal 411 enter respectively wavelength multiplexing diaphragm 51, wavelength multiplexing diaphragm 51 optical signal transmissives 311, reflected light signal 411, is multiplexed with light signal 511 by light signal 311 and light signal 411, therefore that the first light signal 11 is together multiplexing to the 4th light signal 14.
As shown in Figure 3, the light transmission of wavelength multiplexing diaphragm 51, specific as follows: utilize 51 two polarization states of wavelength multiplexing diaphragm to see through the difference of characteristic, make S polarization state wherein close the first light signal 11 and the 3rd light signal 13 of ripple, can be by the second light signal 12 scopes as zone of transition; Equally, P polarization state is closed the second light signal 12 and the 4th light signal 14 of ripple, can be by the 3rd light signal 13 scopes as zone of transition.
Utilize above-mentioned method of the present utility model, be equivalent to wavelength interval to elongate one times, the multipath light signal of realizing intensive wavelength interval is multiplexing; Thereby, making not to be by this patent describing mode, insurmountable large incident angle is closed ripple wavelength multiplexing diaphragm, becomes a reality; Meanwhile, because realize wide-angle incident, close ripple, significantly reduce optical path length, coupling loss reducing and thermal stability are improved.
Be more than preferred embodiment of the present utility model, all changes of doing according to technical solutions of the utility model, when the function producing does not exceed the scope of technical solutions of the utility model, all belong to protection domain of the present utility model.
Claims (6)
1. the optical module of a polarized composite wave, it is characterized in that: comprise the first optical signal generator, the second optical signal generator, the 3rd optical signal generator, the 4th optical signal generator, the first wave plate, the second wave plate, the first polarized composite wave prism, the second polarized composite wave prism, catoptron and wavelength multiplexing diaphragm;
Described the first optical signal generator to the four optical signal generators send respectively the light signal with the wavelength that differs from one another, and described light signal by wavelength from being short to long sequence is: the first light signal, the second light signal, the 3rd light signal, the 4th light signal;
Described the first wave plate is by the polarization direction 90-degree rotation of the first light signal;
Described the second wave plate is by the polarization direction 90-degree rotation of the 3rd light signal;
Described the first polarized composite wave prism is by generation the first multiplexed optical signals for the first optical multiplexed signal after the second light signal and polarization direction 90-degree rotation;
The second described polarized composite wave prism is by generation the second multiplexed optical signals for the 3rd optical multiplexed signal after the 4th light signal and polarization direction 90-degree rotation;
Described wavelength multiplexing diaphragm, by the first light signal, the second light signal, the 3rd light signal and the 4th light signal are synthesized to a road.
2. the optical module of a kind of polarized composite wave according to claim 1, is characterized in that: after described the first light signal and the 3rd light signal polarization direction 90-degree rotation, be S polarization.
3. the optical module of a kind of polarized composite wave according to claim 1, is characterized in that: described the second light signal and the 4th light signal are P polarization.
4. the optical module of a kind of polarized composite wave according to claim 1, is characterized in that: the multiplexing polarization state of described the first polarized composite wave prism is the first light signal of S polarization and the second light signal that polarization state is P polarization.
5. the optical module of a kind of polarized composite wave according to claim 1, is characterized in that: the multiplexing polarization state of described the second polarized composite wave prism is the 3rd light signal of S polarization and the 4th light signal that polarization state is P polarization.
6. the optical module of a kind of polarized composite wave according to claim 1, is characterized in that: described wavelength multiplexing diaphragm, and in S polarization state, transmission the first light signal, reflection the 3rd light signal; In P polarization state, transmission the second light signal, reflection the 4th light signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320701329.1U CN203573001U (en) | 2013-11-08 | 2013-11-08 | Optical module with polarization wave combination |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320701329.1U CN203573001U (en) | 2013-11-08 | 2013-11-08 | Optical module with polarization wave combination |
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| CN203573001U true CN203573001U (en) | 2014-04-30 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891959A (en) * | 2016-06-17 | 2016-08-24 | 武汉光迅科技股份有限公司 | Wavelength multiplexing optical device |
| CN105891960A (en) * | 2016-06-24 | 2016-08-24 | 福州百讯光电有限公司 | Polarized wavelength-division multiplexing optical module and implementation method thereof |
| CN105954835A (en) * | 2016-07-15 | 2016-09-21 | 成都聚芯光科通信设备有限责任公司 | Dense multi-wavelength combination optical module |
| CN106301578A (en) * | 2016-08-22 | 2017-01-04 | 武汉电信器件有限公司 | A kind of weaken the method for signal cross-talk in all kinds of PON symbiotic system |
-
2013
- 2013-11-08 CN CN201320701329.1U patent/CN203573001U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891959A (en) * | 2016-06-17 | 2016-08-24 | 武汉光迅科技股份有限公司 | Wavelength multiplexing optical device |
| CN105891959B (en) * | 2016-06-17 | 2019-07-09 | 武汉光迅科技股份有限公司 | A kind of wavelength multiplexing optics device |
| CN105891960A (en) * | 2016-06-24 | 2016-08-24 | 福州百讯光电有限公司 | Polarized wavelength-division multiplexing optical module and implementation method thereof |
| CN105954835A (en) * | 2016-07-15 | 2016-09-21 | 成都聚芯光科通信设备有限责任公司 | Dense multi-wavelength combination optical module |
| CN105954835B (en) * | 2016-07-15 | 2019-03-01 | 成都聚芯光科通信设备有限责任公司 | A kind of optical module of intensive multi-wavelength multiplex |
| CN106301578A (en) * | 2016-08-22 | 2017-01-04 | 武汉电信器件有限公司 | A kind of weaken the method for signal cross-talk in all kinds of PON symbiotic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160819 Address after: 350015, tea mountain road, Mawei hi tech park, Fujian, Fuzhou Patentee after: FUZHOU OPTOWIDE TECHNOLOGIES CO.,LTD. Address before: 350026, Fuzhou Province, Cangshan District, covering the town of Ping Shan Road, Jinshan District, Jinshan Industrial Zone, No. 869 Fu Fu Wan standard factory building on the first floor of the first floor, building 24 Patentee before: FUZHOU BAIXUN PHOTOELECTRIC CO.,LTD. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 350015 five floors and three floors of building a and building B, building 1, Chashan Road, Mawei science and Technology Park, Fuzhou City, Fujian Province Patentee after: Tengjing Technology Co.,Ltd. Address before: 350015, tea mountain road, Mawei hi tech park, Fujian, Fuzhou Patentee before: FUZHOU OPTOWIDE TECHNOLOGIES CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |