CN105737866A - Delay match sampling laser phase noise compensation device - Google Patents
Delay match sampling laser phase noise compensation device Download PDFInfo
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- CN105737866A CN105737866A CN201610175085.6A CN201610175085A CN105737866A CN 105737866 A CN105737866 A CN 105737866A CN 201610175085 A CN201610175085 A CN 201610175085A CN 105737866 A CN105737866 A CN 105737866A
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- module
- compensation device
- laser
- sampling
- delay matching
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- 238000005070 sampling Methods 0.000 title claims abstract description 28
- 238000013480 data collection Methods 0.000 claims abstract description 12
- 230000003287 optical effect Effects 0.000 claims abstract description 4
- 238000002168 optical frequency-domain reflectometry Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract 3
- 230000000694 effects Effects 0.000 description 3
- 238000012952 Resampling Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35303—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using a reference fibre, e.g. interferometric devices
Abstract
The invention discloses a delay match sampling laser phase noise compensation device. The device is characterized in that the laser phase noise compensation device comprises a transmission module, a data collection module, a digital signal processing module, a delay match sampling module and a phase diversity module which are successively connected in series; and the phase diversity module is connected with the transmission module, and a circulator connected to an optical sensor is connected in series between the transmission module and the data collection module. The laser phase noise compensation method based on delay match sampling greatly reduces a requirement of a compensation system for an auxiliary interference arm length, and the interference arm length is shortened to a few meters, so an OFDR measurement distance and OFDR precision are further improved.
Description
Technical field
The present invention relates to the laser of a kind of delay matching sampling to make an uproar mutually compensation device, particularly relate to the laser of the delay matching sampling of a kind of OFDR of raising certainty of measurement and make an uproar mutually compensation device.
Background technology
Laser phase noise is the final factor of restriction systematic survey distance and positioning precision, therefore, all takes indemnifying measure of making an uproar mutually in OFDR technology, to improve measurement distance and the precision of OFDR further.At present the laser of report is made an uproar compensation technique mutually, it is common to utilizes light auxiliary to interfere and obtains laser phase control information, then passes through digital form and compensate the phase error measuring signal.Difference is mainly reflected on concrete digital compensation method, and representational have: as sampling clock collection, auxiliary interference signal is measured signal；Signal is measured with auxiliary interference signal resampling；By sub-arm Signal estimation laser phase error, deskew algorithm compensation laser is then adopted to make an uproar mutually.But, the common issue faced is: one, auxiliary are interfered needs long interference arm delay poor, and desired arm, up to several kilometers, causes that interference signal is environmentally sensitive, and poor stability is unsatisfactory for practical application request；It is poor that the interference arm two, adopting length postpones, and can only estimate the phase contrast of laser, cause that compensation effect is uneven, and signal to noise ratio rises and falls big, and the echo compensated signal effect being namely closely located to auxiliary interference brachium is best, and the signal compensation effect deviateing this position worsens therewith.
Summary of the invention
The technical problem to be solved is to provide the laser of a kind of delay matching sampling and makes an uproar mutually compensation device, can be used for improving OFDR certainty of measurement.
For solving above-mentioned technical problem, the technical scheme is that the laser that a kind of delay matching is sampled is made an uproar compensation device mutually, its innovative point is in that: described laser is made an uproar transport module that compensation device includes being sequentially connected in series, data collection module, digital signal processing module, delay matching sampling module, phase diversity module mutually, described phase diversity module is connected with described transport module, is serially connected with the circulator being connected with optical pickocff between described transport module with described data collection module.
Preferably, the first balance reception module it is provided with between described circulator and described data collection module.
Preferably, described first balance reception module is provided with the branch road being joined directly together with described transport module.
Preferably, the second balance reception module it is serially connected with between described delay matching sampling module and described phase diversity module.
Preferably, it is serially connected with the 3rd balance reception module between described delay matching sampling module and described phase diversity module.
It is an advantage of the current invention that: the laser based on delay matching sampling is made an uproar compensation method mutually, significantly reduce compensation system and auxiliary is interfered the demand of brachium, shortened arm length being interfered to several meters, thus improving measurement distance and the precision of OFDR further.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation；
Fig. 1 is that the laser of a kind of delay matching of present invention sampling is made an uproar the structural representation of compensation device mutually；
In figure: 1-transport module, 2-data collection module, 3-digital signal processing module, 4-delay matching sampling module, 5-phase diversity module, 6-the first balance reception module, 7-the second balance reception module, 8-the 3rd balance reception module, 9-circulator, 10-optical pickocff.
Detailed description of the invention
The laser of the delay matching sampling of the present invention is made an uproar transport module 1 that compensation device includes being sequentially connected in series, data collection module 2, digital signal processing module 3, delay matching sampling module 4, phase diversity module 5 mutually, phase diversity module 5 is connected with transport module 1, is serially connected with the circulator 9 being connected with optical pickocff 10 between transport module 1 with data collection module 2.Laser based on delay matching sampling is made an uproar compensation method mutually, significantly reduces compensation system and auxiliary is interfered the demand of brachium, shortened arm length will be interfered to several meters, thus improving measurement distance and the precision of OFDR further.
It is provided with the first balance reception module 6 between above-mentioned circulator 9 and data collection module 2, the first balance reception module 6 is provided with the branch road being joined directly together with transport module 1.It is serially connected with the second balance reception module 7 between delay matching sampling module 4 and phase diversity module 5, between delay matching sampling module 4 and phase diversity module 5, is serially connected with the 3rd balance reception module 8.
In said apparatus, main interference signal and auxiliary interference signal respectively enter data acquisition module, then data acquisition module exports signal respectively through main interference signal processing and auxiliary interference signal process, then auxiliary interference signal processes and feeds back to main interference signal processing, exports through interface system after.
Finally it should be noted that, above example is only in order to illustrate technical scheme and non-limiting technical scheme, it will be understood by those within the art that, technical scheme is modified or equivalent replacement by those, without deviating from objective and the scope of the technical program, all should be encompassed in the middle of scope of the presently claimed invention.
Claims (5)
1. the laser of delay matching sampling is made an uproar compensation device mutually, it is characterized in that: described laser is made an uproar transport module that compensation device includes being sequentially connected in series, data collection module, digital signal processing module, delay matching sampling module, phase diversity module mutually, described phase diversity module is connected with described transport module, is serially connected with the circulator being connected with optical pickocff between described transport module with described data collection module.
2. the laser of a kind of delay matching as claimed in claim 1 sampling is made an uproar compensation device mutually, it is characterised in that: it is provided with the first balance reception module between described circulator and described data collection module.
3. the laser of a kind of delay matching as claimed in claim 2 sampling is made an uproar compensation device mutually, it is characterised in that: described first balance reception module is provided with the branch road being joined directly together with described transport module.
4. the laser of a kind of delay matching as claimed in claim 1 sampling is made an uproar compensation device mutually, it is characterised in that: it is serially connected with the second balance reception module between described delay matching sampling module and described phase diversity module.
5. the laser of a kind of delay matching as claimed in claim 1 sampling is made an uproar compensation device mutually, it is characterised in that: it is serially connected with the 3rd balance reception module between described delay matching sampling module and described phase diversity module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610175085.6A CN105737866A (en) | 2016-03-25 | 2016-03-25 | Delay match sampling laser phase noise compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610175085.6A CN105737866A (en) | 2016-03-25 | 2016-03-25 | Delay match sampling laser phase noise compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105737866A true CN105737866A (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610175085.6A Pending CN105737866A (en) | 2016-03-25 | 2016-03-25 | Delay match sampling laser phase noise compensation device |
Country Status (1)
| Country | Link |
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| CN (1) | CN105737866A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101207444A (en) * | 2006-12-15 | 2008-06-25 | 富士通株式会社 | Coherent optical receiver |
| CN102440762A (en) * | 2011-09-13 | 2012-05-09 | 深圳沃夫特影像技术有限公司 | Method and system for stabilizing frequency by interference phase parameter calibration feedback regulation and control |
| JP2013174563A (en) * | 2012-02-27 | 2013-09-05 | Oki Electric Ind Co Ltd | Optical fiber sensor system |
| CN103944644A (en) * | 2014-04-09 | 2014-07-23 | 上海交通大学 | Optical coherent system based on matching delay sampling and phase noise measuring and compensating method |
| CN104833380A (en) * | 2015-04-22 | 2015-08-12 | 江苏骏龙电力科技股份有限公司 | Light frequency scanning non-linear calibration system |
-
2016
- 2016-03-25 CN CN201610175085.6A patent/CN105737866A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101207444A (en) * | 2006-12-15 | 2008-06-25 | 富士通株式会社 | Coherent optical receiver |
| CN102440762A (en) * | 2011-09-13 | 2012-05-09 | 深圳沃夫特影像技术有限公司 | Method and system for stabilizing frequency by interference phase parameter calibration feedback regulation and control |
| JP2013174563A (en) * | 2012-02-27 | 2013-09-05 | Oki Electric Ind Co Ltd | Optical fiber sensor system |
| CN103944644A (en) * | 2014-04-09 | 2014-07-23 | 上海交通大学 | Optical coherent system based on matching delay sampling and phase noise measuring and compensating method |
| CN104833380A (en) * | 2015-04-22 | 2015-08-12 | 江苏骏龙电力科技股份有限公司 | Light frequency scanning non-linear calibration system |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160706 |
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| WD01 | Invention patent application deemed withdrawn after publication |