CN107402118A - A kind of measuring system of rare-earth doped optical fibre refractive index - Google Patents
A kind of measuring system of rare-earth doped optical fibre refractive index Download PDFInfo
- Publication number
- CN107402118A CN107402118A CN201710613050.0A CN201710613050A CN107402118A CN 107402118 A CN107402118 A CN 107402118A CN 201710613050 A CN201710613050 A CN 201710613050A CN 107402118 A CN107402118 A CN 107402118A
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- China
- Prior art keywords
- signal
- photodetector
- rare
- earth doped
- fibre
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 82
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 49
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 49
- 239000000835 fiber Substances 0.000 claims abstract description 70
- 230000003287 optical effect Effects 0.000 claims abstract description 29
- 238000012360 testing method Methods 0.000 claims description 47
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 21
- 238000000034 method Methods 0.000 description 10
- 230000010355 oscillation Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0228—Testing optical properties by measuring refractive power
Abstract
Description
Claims (3)
- A kind of 1. refractometry system of rare-earth doped optical fibre, it is characterised in that:Including narrow linewidth Distributed Feedback Laser (101), protect Inclined fiber coupler (102), photodetector one (103), intensity type optical modulator (104), modulator driver (105), list Mode fiber coupler (106), photodetector two (107), rare-earth doped optical fibre to be measured (108), photodetector three (109), Signal source (201), power splitter (202), IQ frequency mixers (203), low pass filter (204), data acquisition and signal transacting and aobvious Show module (205), it is the narrow linewidth Distributed Feedback Laser (101), polarization-maintaining fiber coupler (102), photodetector one (103), strong Degree type optical modulator (104), modulator driver (105), single-mode optical-fibre coupler (106), photodetector two (107), treat One rare-earth doped optical fibre (108), photodetector three (109) composition light load radio frequency transmission link are surveyed, the narrow linewidth DFB swashs The polarised light of light device (101) output passes through polarization-maintaining fiber coupler (102), polarization-maintaining fiber coupler (102) high-power output The output light of port enters in single-mode optical-fibre coupler (106) after intensity type optical modulator (104), single-mode optical-fibre coupler (106) output light of high-power output port incides photodetector (109) after rare-earth doped optical fibre to be measured (108) On, the optical signal difference of the polarization-maintaining fiber coupler (102) and the output of single-mode optical-fibre coupler (106) small-signal output port Into in photodetector one (103) and photodetector two (107), the two photodetectors convert optical signals into telecommunications Number and linear modulation model is in by modulator driver (105) all the time come the operating point of intensity type optical modulator (104) In enclosing;The radiofrequency signal of signal source (201) output is divided into two-way radiofrequency signal after power splitter (202), and radio frequency is believed all the way Number it is loaded on intensity type optical modulator (104), will exports a light on the rf-signal modulation to light wave and carry radiofrequency signal.Should Light carries radiofrequency signal and incided after testing fiber (108) on photodetector three (109).Photodetector (109) is by light Signal is converted into radiofrequency signal and enters the rf inputs of frequency mixer (203), and the another way radiofrequency signal of power splitter (202) is entered Enter the local oscillator input of frequency mixer (203), the output of frequency mixer (203) is a d. c. voltage signal, and the d. c. voltage signal passes through Enter data acquisition and signal transacting after crossing low pass filter (204) filtering and display module (205) carries out data sampling and processing And the refractive index of testing fiber is shown by display & control system.
- A kind of 2. rare-earth doped optical fibre refractometry system according to claim 1, it is characterised in that the polarization-maintaining light The coupling ratio of fine coupler (102) is 1:99.
- A kind of 3. rare-earth doped optical fibre refractometry system according to claim 1, it is characterised in that the single-mode optics The coupling ratio of fine coupler (106) is 1:99.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201710613050.0A CN107402118B (en) | 2017-07-25 | 2017-07-25 | A kind of measuring system of rare-earth doped optical fibre refractive index |
Applications Claiming Priority (1)
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CN201710613050.0A CN107402118B (en) | 2017-07-25 | 2017-07-25 | A kind of measuring system of rare-earth doped optical fibre refractive index |
Publications (2)
Publication Number | Publication Date |
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CN107402118A true CN107402118A (en) | 2017-11-28 |
CN107402118B CN107402118B (en) | 2019-07-19 |
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Family Applications (1)
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CN201710613050.0A Active CN107402118B (en) | 2017-07-25 | 2017-07-25 | A kind of measuring system of rare-earth doped optical fibre refractive index |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109827927A (en) * | 2019-03-29 | 2019-05-31 | 北京交通大学 | A kind of measuring device of optical fiber doping concentration |
Citations (6)
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---|---|---|---|---|
CN101201292A (en) * | 2006-12-13 | 2008-06-18 | 横河电机株式会社 | Apparatus for measuring the characteristics of an optical fiber |
CN104279959A (en) * | 2014-09-30 | 2015-01-14 | 中国电子科技集团公司第四十一研究所 | New method for precisely measuring optical fiber length by adoption of vector network analyzer |
CN105141258A (en) * | 2015-09-29 | 2015-12-09 | 成都华光瑞芯微电子股份有限公司 | Microwave frequency conversion method and apparatus |
CN105784328A (en) * | 2016-03-30 | 2016-07-20 | 武汉光迅科技股份有限公司 | Automatic EDFA transient characteristic index test system |
CN106248623A (en) * | 2015-06-10 | 2016-12-21 | 佳能株式会社 | Refractive index measurement method, measurement apparatus and Optical element manufacturing method |
CN206311115U (en) * | 2016-12-30 | 2017-07-07 | 中国电子科技集团公司第三十四研究所 | A kind of phase sensitive optical time domain reflectometer phase demodulating system |
-
2017
- 2017-07-25 CN CN201710613050.0A patent/CN107402118B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101201292A (en) * | 2006-12-13 | 2008-06-18 | 横河电机株式会社 | Apparatus for measuring the characteristics of an optical fiber |
CN104279959A (en) * | 2014-09-30 | 2015-01-14 | 中国电子科技集团公司第四十一研究所 | New method for precisely measuring optical fiber length by adoption of vector network analyzer |
CN106248623A (en) * | 2015-06-10 | 2016-12-21 | 佳能株式会社 | Refractive index measurement method, measurement apparatus and Optical element manufacturing method |
CN105141258A (en) * | 2015-09-29 | 2015-12-09 | 成都华光瑞芯微电子股份有限公司 | Microwave frequency conversion method and apparatus |
CN105784328A (en) * | 2016-03-30 | 2016-07-20 | 武汉光迅科技股份有限公司 | Automatic EDFA transient characteristic index test system |
CN206311115U (en) * | 2016-12-30 | 2017-07-07 | 中国电子科技集团公司第三十四研究所 | A kind of phase sensitive optical time domain reflectometer phase demodulating system |
Non-Patent Citations (1)
Title |
---|
朱兴邦等: ""基于调制相移法的高准确度光纤长度测量技术"", 《光子学报》 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109827927A (en) * | 2019-03-29 | 2019-05-31 | 北京交通大学 | A kind of measuring device of optical fiber doping concentration |
CN109827927B (en) * | 2019-03-29 | 2020-12-25 | 北京交通大学 | Measuring device for optical fiber doping concentration |
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CN107402118B (en) | 2019-07-19 |
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Effective date of registration: 20190614 Address after: 23rd Floor, 868 Changshou Road, Putuo District, Shanghai 200060 Applicant after: Shanghai Taiyang Technology Co.,Ltd. Address before: 215600 Jiangsu province Suzhou Zhangjiagang free trade zone new industry breeding center A Dong 145 Applicant before: SUZHOU RUNTONG PATENT OPERATION Co.,Ltd. |
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GR01 | Patent grant | ||
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PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A measuring system for refractive index of rare earth doped fiber Effective date of registration: 20221102 Granted publication date: 20190719 Pledgee: Industrial Bank Co.,Ltd. Shanghai Changning sub branch Pledgor: Shanghai Taiyang Technology Co.,Ltd. Registration number: Y2022310000310 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231117 Granted publication date: 20190719 Pledgee: Industrial Bank Co.,Ltd. Shanghai Changning sub branch Pledgor: Shanghai Taiyang Technology Co.,Ltd. Registration number: Y2022310000310 |
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PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A measurement system for refractive index of rare earth doped optical fibers Effective date of registration: 20231122 Granted publication date: 20190719 Pledgee: Industrial Bank Co.,Ltd. Shanghai Changning sub branch Pledgor: Shanghai Taiyang Technology Co.,Ltd. Registration number: Y2023310000765 |