CN203705696U - High isolation wavelength division multiplexing detection device - Google Patents
High isolation wavelength division multiplexing detection device Download PDFInfo
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- CN203705696U CN203705696U CN201420077424.3U CN201420077424U CN203705696U CN 203705696 U CN203705696 U CN 203705696U CN 201420077424 U CN201420077424 U CN 201420077424U CN 203705696 U CN203705696 U CN 203705696U
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- China
- Prior art keywords
- optical fiber
- filter plate
- light signal
- collimation lens
- described filter
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Abstract
The utility model relates to the light communication field and discloses a high isolation wavelength division multiplexing detection device. The high isolation wavelength division multiplexing detection device comprises a first fiber, an auxiliary fiber, a fourth fiber, a collimating lens, a filter and a photoelectric conversion detector, wherein the collimating lens is arranged between the first fiber, the auxiliary fiber, the fourth fiber and the filter, the first fiber is a light signal input end, a light signal enters the filter through the collimating lens for reflection and transmission, the auxiliary fiber is used for re-transmitting the light reflected by the filter to the filter through the collimating lens for reflection and transmission, the fourth fiber is a light signal output end and is used for outputting the light reflected by the filter again, the transmission light of the filter is outputted to the photoelectric conversion detector, and the photoelectric conversion detector is used for converting the transmission light into an electrical signal for output. The high isolation wavelength division multiplexing detection device can improve reflection isolation, improves transmissivity and further improves quality of the outputted signal.
Description
Technical field
The utility model relates to optical communication field, particularly a kind of high-isolation wavelength-division multiplex sensitive detection parts.
Background technology
Along with country progressively promotes optical fiber communication, the demand that the multiple network such as CATV CATV (cable television), IPTV Web TV, voice, broadband access network merge is more and more.Transmission selections that be inevitable in various signal integrations to optical fiber, the sharpness of while user to video and the stability requirement of network are also more and more higher.
In the stage of not realizing all optical communication, the electrooptical device of optical fibre wavelength-division multiplex integrated electro detecting function remains main flow.Wavelength-division multiplex is for transmitting different light signals, and photoelectric detector, for the conversion of light-electricity, docks with user's download thereby realize, so the quality of wavelength-division-multiplexed optical signal is the principal element that affects user.One of them solution is: increase isolation, improve signal quality, reduce crosstalking and distortion between signal.
Isolation represents cannot pass device higher than the spurious signal of certain power, wishes that some spurious signal conductively-closed falls, thereby can not have influence on transmission quality.
Common integrated wavelength-division multiplex sensitive detection parts in the market, the isolation of its reflection end is 15 ~ 20dB under normal circumstances.
Summary of the invention
The object of the utility model embodiment is to provide a kind of high-isolation wavelength-division multiplex sensitive detection parts, can increase reflection isolation degree and transmissivity, improves the signal quality of described sensitive detection parts.
A kind of high-isolation wavelength-division multiplex sensitive detection parts that the utility model embodiment provides, comprise the first optical fiber, auxiliary optical fiber, the 4th optical fiber, collimation lens, filter plate, opto-electronic conversion detector, wherein,
Described collimation lens between described the first optical fiber, auxiliary optical fiber, the 4th optical fiber and described filter plate,
Described the first optical fiber is light signal input end, and the described light signal of input incides on described filter plate after described collimation lens, and described filter plate is for reflecting and transmission the light signal inciding above it;
Described auxiliary optical fiber for being again transferred to the reflected light of described filter plate on described filter plate and reflecting and transmission after described collimation lens, and described the 4th optical fiber is light signal output end, for exporting described filter plate reflected light again;
The transmitted light of described filter plate outputs to described opto-electronic conversion detector, and described opto-electronic conversion detector is for being converted to described transmitted light electric signal output.
Alternatively, described collimation lens adopts C lens.
Alternatively, described collimation lens adopts G lens.
Alternatively, described auxiliary optical fiber comprises the second optical fiber, the 3rd optical fiber, described the second optical fiber and described the 3rd fused fiber splice, wherein,
Described the first optical fiber is light signal input end, and described light signal incides on described filter plate and reflects and transmission after described collimation lens;
Described the second optical fiber and the 3rd optical fiber for being again transferred to the reflected light of described filter plate on described filter plate and reflecting and transmission after described collimation lens standard, described the 4th optical fiber is light signal output end, for exporting described filter plate reflected light again.
Alternatively, described auxiliary optical fiber is to be formed by a fibre-optical bending, specifically,
Described the first optical fiber is light signal input end, and described light signal incides on described filter plate and reflects and transmission after described collimation lens;
The reflected light coupling of described filter plate enters one end of bending described auxiliary optical fiber, the other end of described auxiliary optical fiber for being again transferred to the reflected light of described filter plate on described filter plate and reflecting and transmission after described collimation lens standard, described the 4th optical fiber is light signal output end, for exporting described filter plate reflected light again.
Alternatively, also comprise outer tube, sleeve pipe and kapillary, described sleeve pipe is positioned at outer tube, and described kapillary is positioned at described sleeve pipe, and described the first optical fiber, the second optical fiber, the 3rd optical fiber and the 4th optical fiber are arranged in described kapillary.
Alternatively, between each device, adopt glue to be adhesively fixed.
Alternatively, described opto-electronic conversion detector adopts photodetection diode.
Therefore application the present embodiment technical scheme, owing to adopting auxiliary optical fiber structure to carry out two secondary reflections to the mixed light of input, has increased reflection isolation degree and transmissivity, has improved the signal quality of described sensitive detection parts.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
A kind of high-isolation wavelength-division multiplex sensitive detection parts structural representation that Fig. 1 provides for the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
embodiment:
The present embodiment provides a kind of high-isolation wavelength-division multiplex sensitive detection parts, compared with prior art, more than reflection isolation degree can be increased to 30dB from 15 ~ 20dB, as shown in Figure 1, comprise the first optical fiber 11, auxiliary optical fiber 12, the 4th optical fiber 13, collimation lens 16, filter plate 14, opto-electronic conversion detector 15, wherein, described collimation lens 16 is positioned at described the first optical fiber 11, auxiliary optical fiber 12, between the 4th optical fiber 13 and described filter plate 14, described the first optical fiber 11 is light signal input ends, the described light signal of input incides on described filter plate 14 after described collimation lens 16, described filter plate 14 reflects and transmission the light signal inciding above it.
Described auxiliary optical fiber 12 for being again transferred to the reflected light of described filter plate 14 on described filter plate 14 and reflecting and transmission after described collimation lens 16, described the 4th optical fiber 13 is light signal output ends, for exporting described filter plate 14 reflected light again;
The transmitted light of described filter plate 14 outputs to described opto-electronic conversion detector 15, and described opto-electronic conversion detector 15 is for being converted to described transmitted light electric signal output.
Can be, but not limited to, described collimation lens 16 adopts C lens, described C lens cheap.
Can be, but not limited to, described collimation lens 16 also can adopt G lens.
Can be, but not limited to, described auxiliary optical fiber 12 comprises the second optical fiber 121, the 3rd optical fiber 122, described the second optical fiber 121 and described the 3rd optical fiber 122 weldings, wherein, described the first optical fiber 11 is light signal input ends, and described light signal incides on described filter plate 14 and reflects and transmission after described collimation lens 16; The reflected light of described filter plate 14 is coupled to the second optical fiber 121, and then be coupled to the 3rd optical fiber 122, described the 3rd optical fiber 122 for being again transferred to the reflected light of described filter plate 14 on described filter plate 14 and reflecting and transmission after described collimation lens 16, described the 4th optical fiber 13 is light signal output ends, for exporting described filter plate 14 reflected light again.
Can be, but not limited to, described auxiliary optical fiber 12 is to be formed by a fibre-optical bending, and specifically, described the first optical fiber 11 is light signal input ends, and described light signal incides on described filter plate 14 and reflects and transmission after described collimation lens 16;
The reflected light coupling of described filter plate 14 enters one end of bending described auxiliary optical fiber 12, the other end of described auxiliary optical fiber 12 for being again transferred to the reflected light of described filter plate 14 on described filter plate 14 and reflecting and transmission after described collimation lens 16, described the 4th optical fiber 13 is light signal output ends, for exporting described filter plate 14 reflected light again.
Can be, but not limited to, also comprise outer tube 17, sleeve pipe 18 and kapillary 19, described sleeve pipe 18 is positioned at outer tube 17, and described kapillary 19 is positioned at described sleeve pipe 18, and described the first optical fiber 11, the second optical fiber 121, the 3rd optical fiber 122 and the 4th optical fiber 13 are arranged in described kapillary 19.Can be, but not limited to, between each device, can adopt glue to be adhesively fixed, also can adopt laser bonding to fix.
Can be, but not limited to, described opto-electronic conversion detector 15 adopts photodetection diode PD(Photo-Diode).
Therefore the present embodiment technical scheme has increased reflection isolation degree and transmissivity, improve the signal quality of described sensitive detection parts.
Above-described embodiment, does not form the restriction to this technical scheme protection domain.The amendment done within any spirit at above-mentioned embodiment and principle, be equal to and replace and improvement etc., within all should being included in the protection domain of this technical scheme.
Claims (8)
1. high-isolation wavelength-division multiplex sensitive detection parts, is characterized in that, comprise the first optical fiber, auxiliary optical fiber, the 4th optical fiber, collimation lens, filter plate, opto-electronic conversion detector, wherein,
Described collimation lens between described the first optical fiber, auxiliary optical fiber, the 4th optical fiber and described filter plate,
Described the first optical fiber is light signal input end, and the described light signal of input incides on described filter plate after described collimation lens, and described filter plate is for reflecting and transmission the light signal inciding above it;
Described auxiliary optical fiber for being again transferred to the reflected light of described filter plate on described filter plate and reflecting and transmission after described collimation lens, and described the 4th optical fiber is light signal output end, for exporting described filter plate reflected light again;
The transmitted light of described filter plate outputs to described opto-electronic conversion detector, and described opto-electronic conversion detector is for being converted to described transmitted light electric signal output.
2. a kind of high-isolation wavelength-division multiplex sensitive detection parts as claimed in claim 1, is characterized in that, described collimation lens adopts C lens.
3. a kind of high-isolation wavelength-division multiplex sensitive detection parts as claimed in claim 1, is characterized in that, described collimation lens adopts G lens.
4. as a kind of high-isolation wavelength-division multiplex sensitive detection parts as described in arbitrary in claims 1 to 3, it is characterized in that, described auxiliary optical fiber comprises the second optical fiber, the 3rd optical fiber, described the second optical fiber and described the 3rd fused fiber splice, wherein,
Described the first optical fiber is light signal input end, and described light signal incides on described filter plate and reflects and transmission after described collimation lens;
Described the second optical fiber and the 3rd optical fiber for being again transferred to the reflected light of described filter plate on described filter plate and reflecting and transmission after described collimation lens standard, described the 4th optical fiber is light signal output end, for exporting described filter plate reflected light again.
5. as a kind of high-isolation wavelength-division multiplex sensitive detection parts as described in arbitrary in claims 1 to 3, it is characterized in that, described auxiliary optical fiber is to be formed by a fibre-optical bending, specifically,
Described the first optical fiber is light signal input end, and described light signal incides on described filter plate and reflects and transmission after described collimation lens;
The reflected light coupling of described filter plate enters one end of bending described auxiliary optical fiber, the other end of described auxiliary optical fiber for being again transferred to the reflected light of described filter plate on described filter plate and reflecting and transmission after described collimation lens standard, described the 4th optical fiber is light signal output end, for exporting described filter plate reflected light again.
6. a kind of high-isolation wavelength-division multiplex sensitive detection parts as claimed in claim 1, it is characterized in that, also comprise outer tube, sleeve pipe and kapillary, described sleeve pipe is positioned at outer tube, described kapillary is positioned at described sleeve pipe, and described the first optical fiber, auxiliary optical fiber and the 4th optical fiber are arranged in described kapillary.
7. a kind of high-isolation wavelength-division multiplex sensitive detection parts as claimed in claim 6, is characterized in that, between each device, adopt glue to be adhesively fixed.
8. a kind of high-isolation wavelength-division multiplex sensitive detection parts as claimed in claim 1, is characterized in that, described opto-electronic conversion detector adopts photodetection diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420077424.3U CN203705696U (en) | 2014-02-24 | 2014-02-24 | High isolation wavelength division multiplexing detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420077424.3U CN203705696U (en) | 2014-02-24 | 2014-02-24 | High isolation wavelength division multiplexing detection device |
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| CN203705696U true CN203705696U (en) | 2014-07-09 |
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| CN201420077424.3U Expired - Fee Related CN203705696U (en) | 2014-02-24 | 2014-02-24 | High isolation wavelength division multiplexing detection device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730646A (en) * | 2015-04-17 | 2015-06-24 | 黄石晨信光电有限责任公司 | Focusing-type optical wavelength division multiplexer |
| CN108169550A (en) * | 2017-12-08 | 2018-06-15 | 中国兵器装备研究院 | A kind of heat sealing machine duration and degree of heating power collecting and calibrating installation |
| WO2021088180A1 (en) * | 2019-11-08 | 2021-05-14 | 武汉光迅科技股份有限公司 | Bidi device, optical module, and production method |
| CN112882159A (en) * | 2021-03-03 | 2021-06-01 | 南京华脉科技股份有限公司 | Integrated wavelength division multiplexer |
-
2014
- 2014-02-24 CN CN201420077424.3U patent/CN203705696U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730646A (en) * | 2015-04-17 | 2015-06-24 | 黄石晨信光电有限责任公司 | Focusing-type optical wavelength division multiplexer |
| CN104730646B (en) * | 2015-04-17 | 2018-01-12 | 黄石晨信光电有限责任公司 | A kind of focusing light wavelength division multiplexing |
| CN108169550A (en) * | 2017-12-08 | 2018-06-15 | 中国兵器装备研究院 | A kind of heat sealing machine duration and degree of heating power collecting and calibrating installation |
| WO2021088180A1 (en) * | 2019-11-08 | 2021-05-14 | 武汉光迅科技股份有限公司 | Bidi device, optical module, and production method |
| CN112882159A (en) * | 2021-03-03 | 2021-06-01 | 南京华脉科技股份有限公司 | Integrated wavelength division multiplexer |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20190224 |