CN105806594A - Optical fiber detection method of millimeter-scale resolution ratio - Google Patents
Optical fiber detection method of millimeter-scale resolution ratio Download PDFInfo
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- CN105806594A CN105806594A CN201610175088.XA CN201610175088A CN105806594A CN 105806594 A CN105806594 A CN 105806594A CN 201610175088 A CN201610175088 A CN 201610175088A CN 105806594 A CN105806594 A CN 105806594A
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- 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
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- Testing Of Optical Devices Or Fibers (AREA)
Abstract
The invention discloses an optical fiber detection method of the millimeter-scale resolution ratio.The optical fiber detection method is characterized by comprising the following steps that an optical frequency domain reflectometer is set, wherein a to-be-detected optical fiber with the standard length being 1 m is intercepted, a prominent pulse peak value on an oscillogram is recorded, the process is repeated multiple times, and the average value A of the obtained pulse peak values is calcualted; 1 mm of the optical fiber at one end of the to-be-detected optical fiber is cut off, the remaining detected optical fiber is a new to-be-detected optical fiber, a prominent pulse peak value on an oscillogram is recorded, the process is repeated multiple times, and the average value a of the obtained pulse peak values is calculate; difference value calculation is conducted on the average value A and the average value a, and if the calculated result is not zero, the resolution ratio of an OFDR system is 1/1000 m.By the adoption of the detection method, detection of multiple groups of data is conducted on the initial length and the remaining length obtained after 1 mm of the optical fiber is intercepted through the OFDR system, difference value calculation is conducted on the average values of the two batches of data, and a surface system has an mm-scale resolution ratio if the result is not zero.
Description
Technical field
The present invention relates to a kind of optical fiber detecting method, particularly relate to the optical fiber detecting method of a kind of grade resolution.
Background technology
OFDR measures technology as a kind of retroreflection based on frequency-domain analysis, OTDR is overcome at range resolution ratio and OLCR in the deficiency measured in distance, it may be achieved the measurement of High Range Resolution (some tens of pm～millimeter magnitude), high sensitivity and moderate distance (hundreds of meters～dozens of kilometres) principle.It is mainly used in the fault detect of short-distance and medium-distance dedicated fibre optical network；The health monitoring of large scale component；And the analysis of fiber polarization coupling process and monitoring.The technical difficult points of OFDR is in that, the high-precision discriminating rate of optical fiber physical parameter and accurate spectrum analysis are directly related, does not require nothing more than laser linewidth narrow and require Phase Continuation linear frequency sweep wide ranges.As realized 1mm resolution, it is desirable to swept frequency range is to 100GHz, and live width is less than 10KHz, current laser frequency sweeping method, it is impossible to realize.
Summary of the invention
The technical problem to be solved is to provide the optical fiber detecting method of a kind of grade resolution, has easy to operate feature.
For solving above-mentioned technical problem, the technical scheme is that the optical fiber detecting method of a kind of grade resolution, its innovative point is in that to comprise the following steps:
Step a: utilize the OFDR system of probe beam deflation instrument to treat detection fiber and detect, sets the operating temperature of probe beam deflation instrument 0-40 DEG C of temperature；
Step b: intercept the optical fiber to be detected that full-length is 1m, graphical interfaces on probe beam deflation instrument obtains continuous print oscillogram, record pulse spike value prominent in oscillogram, then repeatedly measure and obtain multiple prominent pulse spike values, finally calculate the meansigma methods A of some acquisition pulse spike values；
Step c: deduct the optical fiber of the 1mm length of optical fiber to be detected wherein one end that above-mentioned full-length is 1m, the detection fiber of remaining length is new optical fiber to be detected, graphical interfaces on probe beam deflation instrument obtains continuous print oscillogram, record pulse spike value prominent in oscillogram, then repeatedly measure and obtain multiple prominent pulse spike values, finally calculate the meansigma methods a of some acquisition pulse spike values；
Step d: step b and the step c meansigma methods A obtained and meansigma methods a is carried out mathematic interpolation, if result of calculation is not the resolution of 0, OFDR system is 1/1000m.
Preferably, described step c intercepts 1mm length and use slide gauge and mm level tape measure.
Preferably, described meansigma methods A is accurate to 3-4 position after arithmetic point.
Preferably, described meansigma methods a is accurate to 3-4 position after arithmetic point.
Preferably, described optical fiber to be detected is 10m single-mode fiber.
It is an advantage of the current invention that: by adopting above-mentioned detection method, OFDR system is utilized to carry out the detection of some groups of data respectively for remaining length after initial length and intercepting 1mm, the meansigma methods of two batch datas is carried out difference operation, if result is not 0, surface system has mm class resolution ratio.
Detailed description of the invention
The optical fiber detecting method of the grade resolution of the present invention comprises the following steps: step a: utilizes the OFDR system of probe beam deflation instrument to treat detection fiber and detects, and sets the operating temperature of probe beam deflation instrument 0-40 DEG C of temperature；Step b: intercept the optical fiber to be detected that full-length is 1m, graphical interfaces on probe beam deflation instrument obtains continuous print oscillogram, record pulse spike value prominent in oscillogram, then repeatedly measure and obtain multiple prominent pulse spike values, finally calculate the meansigma methods A of some acquisition pulse spike values；Step c: deduct the optical fiber of the 1mm length of optical fiber to be detected wherein one end that above-mentioned full-length is 1m, the detection fiber of remaining length is new optical fiber to be detected, graphical interfaces on probe beam deflation instrument obtains continuous print oscillogram, record pulse spike value prominent in oscillogram, then repeatedly measure and obtain multiple prominent pulse spike values, finally calculate the meansigma methods a of some acquisition pulse spike values；Step d: step b and the step c meansigma methods A obtained and meansigma methods a is carried out mathematic interpolation, if result of calculation is not the resolution of 0, OFDR system is 1/1000m.By adopting above-mentioned detection method, utilizing OFDR system to carry out the detection of some groups of data respectively for remaining length after initial length and intercepting 1mm, the meansigma methods of two batch datas is carried out difference operation, if result is not 0, surface system has mm class resolution ratio.
Intercepting 1mm length in above-mentioned steps c and use slide gauge and mm level tape measure, meansigma methods A is accurate to 3-4 position after arithmetic point, and meansigma methods a is accurate to 3-4 position after arithmetic point, and optical fiber to be detected is 10m single-mode fiber.
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 optical fiber detecting method of a grade resolution, it is characterised in that comprise the following steps:
Step a: utilize the OFDR system of probe beam deflation instrument to treat detection fiber and detect, sets the operating temperature of probe beam deflation instrument 0-40 DEG C of temperature；
Step b: intercept the optical fiber to be detected that full-length is 1m, graphical interfaces on probe beam deflation instrument obtains continuous print oscillogram, record pulse spike value prominent in oscillogram, then repeatedly measure and obtain multiple prominent pulse spike values, finally calculate the meansigma methods A of some acquisition pulse spike values；
Step c: deduct the optical fiber of the 1mm length of optical fiber to be detected wherein one end that above-mentioned full-length is 1m, the detection fiber of remaining length is new optical fiber to be detected, graphical interfaces on probe beam deflation instrument obtains continuous print oscillogram, record pulse spike value prominent in oscillogram, then repeatedly measure and obtain multiple prominent pulse spike values, finally calculate the meansigma methods a of some acquisition pulse spike values；
Step d: step b and the step c meansigma methods A obtained and meansigma methods a is carried out mathematic interpolation, if result of calculation is not the resolution of 0, OFDR system is 1/1000m.
2. the optical fiber detecting method of a kind of grade resolution as claimed in claim 1, it is characterised in that: described step c intercepts 1mm length and uses slide gauge and mm level tape measure.
3. the optical fiber detecting method of a kind of grade resolution as claimed in claim 1, it is characterised in that: described meansigma methods A is accurate to 3-4 position after arithmetic point.
4. the optical fiber detecting method of a kind of grade resolution as claimed in claim 1, it is characterised in that: described meansigma methods a is accurate to 3-4 position after arithmetic point.
5. the optical fiber detecting method of a kind of grade resolution as claimed in claim 1, it is characterised in that: described optical fiber to be detected is 10m single-mode fiber.
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| CN201610175088.XA CN105806594A (en) | 2016-03-25 | 2016-03-25 | Optical fiber detection method of millimeter-scale resolution ratio |
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| CN201610175088.XA CN105806594A (en) | 2016-03-25 | 2016-03-25 | Optical fiber detection method of millimeter-scale resolution ratio |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895958A (en) * | 2016-12-30 | 2017-06-27 | 江苏骏龙光电科技股份有限公司 | A kind of fast method for high-precision optical fiber measurement |
Citations (3)
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| CN101726796A (en) * | 2009-12-16 | 2010-06-09 | 电子科技大学 | Cutting device of high-precision optical fiber length and cutting method thereof |
| CN102636121A (en) * | 2012-03-09 | 2012-08-15 | 中国科学院西安光学精密机械研究所 | High-precision optical fiber length measuring system |
| CN104467955A (en) * | 2014-12-24 | 2015-03-25 | 北京奥普科达科技有限公司 | High-sensitivity and high-precision optical fiber identification and calibration method and system |
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2016
- 2016-03-25 CN CN201610175088.XA patent/CN105806594A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101726796A (en) * | 2009-12-16 | 2010-06-09 | 电子科技大学 | Cutting device of high-precision optical fiber length and cutting method thereof |
| CN102636121A (en) * | 2012-03-09 | 2012-08-15 | 中国科学院西安光学精密机械研究所 | High-precision optical fiber length measuring system |
| CN104467955A (en) * | 2014-12-24 | 2015-03-25 | 北京奥普科达科技有限公司 | High-sensitivity and high-precision optical fiber identification and calibration method and system |
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| 叶蕾: "基于窄带光纤激光器的光频域反射计研究", 《光纤与电缆及其应用技术》 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106895958A (en) * | 2016-12-30 | 2017-06-27 | 江苏骏龙光电科技股份有限公司 | A kind of fast method for high-precision optical fiber measurement |
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Application publication date: 20160727 |