CN109827760A - A kind of adjustable optical fiber internal stress measuring device of phase-delay quantity - Google Patents
A kind of adjustable optical fiber internal stress measuring device of phase-delay quantity Download PDFInfo
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- CN109827760A CN109827760A CN201910248599.3A CN201910248599A CN109827760A CN 109827760 A CN109827760 A CN 109827760A CN 201910248599 A CN201910248599 A CN 201910248599A CN 109827760 A CN109827760 A CN 109827760A
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- optical fiber
- internal stress
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- retardation
- delay quantity
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Abstract
The invention discloses a kind of adjustable optical fiber internal stress measuring devices of phase-delay quantity, belong to fiber optic communication, photoelectric measurement, field of signal processing.The light beam that single longitudinal mode laser light source (1) issues is irradiated to the optical fiber on objective table by the reflective mirror of petrographic microscope (2), transmitted light is output to variable equalizer (3) by object lens, is received after the light beam of variable equalizer (3) is by analyzer by CCD camera (4).The phase-delay quantity for adjusting variable equalizer (3) obtains the different measurement results that optical fiber introduces retardation.Different measurement results is compared, retardation when same pixel light intensity minimum takes minimum is obtained, realizes that optical fiber introduces the accurate measurement of retardation.Functional relation between retardation and internal stress is introduced by optical fiber, the internal stress distribution of optical fiber is obtained by calculation, realizes the measurement of optical fiber internal stress.
Description
Technical field
The present invention relates to a kind of adjustable optical fiber internal stress measuring devices of phase-delay quantity, belong to fiber optic communication, photoelectric measuring
Amount, field of signal processing.
Background technique
With the development of communication and sensing technology, design, the manufacture of novel optical fiber have become with application and grind both at home and abroad at present
The hot spot studied carefully, the requirement to the performance indicator of novel optical fiber are also higher and higher.Inside of optical fibre residual stress is to measure optical fiber property
An important parameter, it not only influences mechanical characteristics of optical fi, also results in the variation of index distribution.Although optical fiber is being made
As when have can foundation design parameter, but the index distribution of actual product often has differences with design result, and error is serious
When may cause performance decline so that being unable to normal use.Therefore, lossless internal stress measuring is carried out to optimization optical fiber to optical fiber
Design parameter improves optical fiber property and is of great significance with its manufacturing process is improved.
Optical fiber internal stress measuring principle be using photoelastic effect by measurement light phase delay distribution, using retardation with
The internal stress distribution of optical fiber is calculated in functional relation between internal stress.Existing measurement method mainly has: phase compensation
Method, digital hologram method, phase modulation etc..Since phase compensation method has optical path is simple, measurement accuracy is high, time of measuring is short etc.
Advantage becomes the measurement most common method of optical fiber internal stress.Phase compensation method measures the retardation of optical fiber introducing using compensator,
And then obtain optical fiber internal stress.Measuring process is as follows: the phase-delay quantity of compensator is γc, the slow axis of compensator and optical fiber
Axis is perpendicular, whirl compensator, finds the rotation angle, θ of corresponding compensator when minimum intensity of lightc, to obtain what optical fiber introduced
Retardation Rf, as shown in formula (1):
Acquire RfAnd then the relationship according to phase-delay quantity and internal stress, obtain the internal stress distribution of optical fiber.But at present
Measuring device is using retardation γcFixed compensator can only measure one group of data, so that the result of measurement is not accurate enough
And measuring device can not be optimized.
Summary of the invention
The technical problem to be solved by the present invention is to for compensator phase delay in current optical fiber internal stress measuring device
Amount is fixed non-adjustable to lead to the not accurate enough proposition of measurement result.
The technical solution adopted in the present invention:
A kind of adjustable optical fiber internal stress measuring device of phase-delay quantity, comprising: single longitudinal mode laser light source, polarized light microscopy
Mirror, variable equalizer and CCD camera, wherein variable equalizer can be a kind of LC variable slide, by substrate of glass, indium oxide
Tin electrode, liquid crystal orienting film, liquid crystal cell layer and liquid crystal molecule composition；It is also possible to Soleil compensator, parallel by two optical axises
Quartz wedge, a quartzy parallel plane thin plate and fine adjustment screw composition.The light beam that the single longitudinal mode laser light source issues is by inclined
The reflective mirror of light microscope is irradiated to the optical fiber on objective table, and transmitted light is output to variable equalizer by object lens, by variable
The light beam of compensator after analyzer by CCD camera by being received.
The variable equalizer phase delay measures a fixed value, by continuous Rotary Variable compensator, realizes that optical fiber draws
Enter the rapid survey of retardation.The phase-delay quantity for adjusting variable equalizer, is obtained new by continuous Rotary Variable compensator
Optical fiber introduces retardation measurement result.Different measurement results is compared, is obtained when same pixel light intensity minimum takes minimum
Retardation realizes that optical fiber introduces the accurate measurement of retardation.For LC variable slide, electricity between its two electrode of tin indium oxide is adjusted
It presses, liquid crystal molecule rearranges between substrate of glass, causes index distribution to change, to change retardation；Compensation tired for rope
Device adjusts two overall thickness split by fine adjustment screw, to change retardation.It is introduced between retardation and internal stress by optical fiber
Functional relation is obtained by calculation the internal stress distribution of optical fiber, realizes the measurement of optical fiber internal stress.
Beneficial effects of the present invention are specific as follows
Invention is by single longitudinal mode laser light source, petrographic microscope, variable equalizer and CCD camera, it can be achieved that answering in optical fiber
Lossless, the accurate measurement of power, device is simple, flexibly, construction cost is low, strong applicability, can be widely applied to optical fiber and grating
The fields such as design, manufacture.
Detailed description of the invention
Fig. 1 is the adjustable optical fiber internal stress measuring schematic device of phase-delay quantity.
Fig. 2 is Soleil compensator structural schematic diagram.
Fig. 3 is panda protecting polarized light fiber internal stress cross-sectional distribution figure in embodiment one.
Fig. 4 is the acceptance of the bid quasi-monomode fiber internal stress cross-sectional distribution figure of embodiment two.
Specific embodiment
Embodiment one
Referring to Fig. 1, a kind of adjustable optical fiber internal stress measuring device of phase-delay quantity, comprising: single longitudinal mode laser light source 1,
Petrographic microscope 2, variable equalizer 3 and CCD camera 4.The light beam that the single longitudinal mode laser light source 1 issues passes through petrographic microscope
2 reflective mirror is irradiated to the panda protecting polarized light fiber on objective table, and transmitted light is output to variable equalizer 3 by object lens, by can
Become the light beam of compensator 3 by being received after analyzer by CCD camera 4.
The wavelength of the single longitudinal mode laser light source 1 is 532nm, and variable equalizer 3 is LC variable slide.
The phase delay of variable equalizer 3 measures pi/2, and continuous Rotary Variable compensator 3 obtains each pixel in CCD camera 4
Corresponding retardation when point light intensity difference minimalization.Adjust 6 liang of indium-tin oxide electrode in 3 substrate of glass 5 of variable equalizer
Voltage is held, the liquid crystal molecule 9 under liquid crystal orienting film 7 in liquid crystal cell layer 8 is rearranged, index distribution is caused to change, thus
Change phase-delay quantity is π/4, and continuous Rotary Variable delayer 3 obtains each pixel light intensity in CCD camera 4 and takes new pole respectively
Corresponding retardation when small value.The size for comparing same pixel light intensity minimum in measurement result twice takes smaller corresponding
Retardation；Every 2 ° of the rotation of optical fiber, repeats above-mentioned measurement process, until fiber spinning one week.Utilize fiber spinning one week institute
There is the functional relation of retardation and internal stress, the distribution of optical fiber internal stress is obtained by filter back-projection algorithm, as shown in Figure 3.
Since the phase-delay quantity of compensator is adjustable, optical fiber is drawn as known parameter using different compensator retardations
Enter retardation to take multiple measurements, wherein corresponding optical fiber introducing retardation is most quasi- when same pixel light intensity minimum minimum
Really, it takes the retardation to obtain internal stress as intermediate Parameters Calculation, realizes the accurate measurement of optical fiber internal stress.
Embodiment two
Referring to Fig. 1 and Fig. 2, a kind of adjustable optical fiber internal stress measuring device of phase-delay quantity, comprising: single longitudinal mode laser light
Source 1, petrographic microscope 2, variable equalizer 3 and CCD camera 4.The light beam that the single longitudinal mode laser light source 1 issues is aobvious by polarisation
The reflective mirror of micro mirror 2 is irradiated to the standard single-mode fiber on objective table, and transmitted light is output to variable equalizer 3 by object lens, passes through
The light beam of variable equalizer 3 is crossed by being received after analyzer by CCD camera 4.
The wavelength of the single longitudinal mode laser light source 1 is 532nm, and variable equalizer 3 is Soleil compensator.
The phase delay of variable equalizer 3 measures π/4, and continuous Rotary Variable compensator 3 obtains all pictures in CCD camera 4
Vegetarian refreshments light intensity distinguishes corresponding retardation when minimalization.It is adjusted by the fine adjustment screw 12 of variable equalizer 3 quartzy parallel flat
The overall thickness of two quartz wedges 11 on face thin plate 10 makes phase-delay quantity π/8 of variable equalizer 3, and continuous Rotary Variable is mended
It repays device 3 and obtains corresponding retardation when each pixel light intensity in CCD camera 4 takes new minimum respectively.Measurement knot more twice
The size of same pixel light intensity minimum in fruit, takes the corresponding retardation of smaller as known parameter, is answered using it with interior
The internal stress distribution of optical fiber is obtained by calculation, as shown in Figure 4 in the functional relation of power.
Since optical fiber structure has the characteristics that axisymmetric, the retardation information of all pixels point in one sub-picture of need
It show that internal stress is distributed, greatly reduces time of measuring.By adjusting compensator retardation, make compensated light intensity closer to zero,
Retardation is introduced to obtain more accurate optical fiber, guarantees the accuracy of internal stress calculated result.
Claims (2)
1. a kind of adjustable optical fiber internal stress measuring device of phase-delay quantity, comprising: single longitudinal mode laser light source (1), polarized light microscopy
Mirror (2), variable equalizer (3) and CCD camera (4), it is characterised in that: the light beam warp that the single longitudinal mode laser light source (1) issues
The reflective mirror for crossing petrographic microscope (2) is irradiated to optical fiber on objective table, and transmitted light is output to variable equalizer by object lens
(3), it is received after the light beam of variable equalizer (3) is by analyzer by CCD camera (4).
2. the adjustable optical fiber internal stress measuring device of a kind of phase-delay quantity according to claim 1, it is characterised in that: adjust
Save accurate measurement of the phase-delay quantity of variable equalizer (3) to optical fiber internal stress.
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| CN201910248599.3A CN109827760A (en) | 2019-03-29 | 2019-03-29 | A kind of adjustable optical fiber internal stress measuring device of phase-delay quantity |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6119527A (en) * | 1998-09-21 | 2000-09-19 | Lucent Technologies Inc. | Method and apparatus for proof testing optical fibers |
| JP2003143088A (en) * | 2001-08-21 | 2003-05-16 | Nippon Telegr & Teleph Corp <Ntt> | Optical signal transmission testing method and optical transmission line simulator |
| CN1904673A (en) * | 2005-07-28 | 2007-01-31 | 力特光电科技股份有限公司 | Apparatus and method for testing phase delay value |
| CN101087989A (en) * | 2004-10-15 | 2007-12-12 | 摩根研究股份有限公司 | Embeddable polarimetric fiber optic sensor and method for monitoring of structures |
| CN102538971A (en) * | 2012-01-18 | 2012-07-04 | 中国科学院上海光学精密机械研究所 | Full-optical-field full-stokes parameter detection device and detection method |
| CN107991728A (en) * | 2013-08-23 | 2018-05-04 | 科磊股份有限公司 | Broadband and wide visual field angle compensator |
-
2019
- 2019-03-29 CN CN201910248599.3A patent/CN109827760A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6119527A (en) * | 1998-09-21 | 2000-09-19 | Lucent Technologies Inc. | Method and apparatus for proof testing optical fibers |
| JP2003143088A (en) * | 2001-08-21 | 2003-05-16 | Nippon Telegr & Teleph Corp <Ntt> | Optical signal transmission testing method and optical transmission line simulator |
| CN101087989A (en) * | 2004-10-15 | 2007-12-12 | 摩根研究股份有限公司 | Embeddable polarimetric fiber optic sensor and method for monitoring of structures |
| CN1904673A (en) * | 2005-07-28 | 2007-01-31 | 力特光电科技股份有限公司 | Apparatus and method for testing phase delay value |
| CN102538971A (en) * | 2012-01-18 | 2012-07-04 | 中国科学院上海光学精密机械研究所 | Full-optical-field full-stokes parameter detection device and detection method |
| CN107991728A (en) * | 2013-08-23 | 2018-05-04 | 科磊股份有限公司 | Broadband and wide visual field angle compensator |
Non-Patent Citations (1)
| Title |
|---|
| 冯亭: "MOPA光纤激光系统放大级增益光纤特性与高质量种子源关键技术研究", 《中国博士学位论文全文数据库 信息科技辑》 * |
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Application publication date: 20190531 |