CN104251710A - Preparation method of sensing ring for inhibiting optic fiber gyroscope temperature drift - Google Patents
Preparation method of sensing ring for inhibiting optic fiber gyroscope temperature drift Download PDFInfo
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- CN104251710A CN104251710A CN201310267971.8A CN201310267971A CN104251710A CN 104251710 A CN104251710 A CN 104251710A CN 201310267971 A CN201310267971 A CN 201310267971A CN 104251710 A CN104251710 A CN 104251710A
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Abstract
The present invention belongs to the technical field of optic fiber gyroscopes, and in particular relates to a preparation method of a sensing ring for inhibiting optic fiber gyroscope temperature drift. The method comprises: at the upper and lower sub-regions of the ring skeleton, adopting a quadrupole symmetry method to respectively wind a polarization maintaining optical fiber to form two optical fiber rings, wherein the number of the layers of the fiber rings in the upper sub-region is consistent with the number of the layers of the fiber rings in the lower sub-region, the winding number of each layer of the optical fiber in the upper sub-region is consistent with the winding number of each layer of the optical fiber in the lower sub-region, and the directions of the sensitive axis of the two optical fiber rings are opposite through observing from the axial direction of the ring skeleton; curing the optical fiber rings; and adjusting the gyroscope temperature drifts formed respectively by the two optical rings to make the amplitude be equal and make the direction be opposite. According to the present invention, the adverse effects of the temperature on the gyroscope performance in the prior art is inhibited, the zero drift of the gyroscope under the temperature change environment is reduced, the gyroscope precision is improved, and the engineering application level is improved.
Description
Technical field
The invention belongs to fiber-optics gyroscope field, be specifically related to a kind of sensing ring preparation method suppressing Fiber Optic Gyroscope Temperature Drift.
Background technology
Fibre Optical Sensor ring utilizes Sagnac mechanism works in optical fibre gyro, the core component of responsive rotation angle increment, because optical fiber itself is a kind of very sensitive sensor, it is all very responsive to influencing factors such as temperature, magnetic field, stress, and therefore Fibre Optical Sensor ring is unavoidably subject to the impact of these factors.All the time, temperature performance is the important indicator during optical fibre gyro research and through engineering approaches are applied, environment temperature is understood directly and indirect induction produces additive phase error, the phase differential introduced with rotation stacks up and cannot distinguish, thus cause the error of zero of optical fibre gyro, and be Fibre Optical Sensor ring to temperature error contribution is maximum.
At present, generally adopt four polar-symmetric method winding optical fiber rings, (Chinese inertial technology journal in " the temperature drift characteristic machine coil technique research of the responsive ring of optical fibre gyro ", 06 phase in 1998) developed four extremely symmetrical winding and advantages thereof, greatly inhibit the non-reciprocal phase error that Yin Wendu in ring causes, but the shupe effect errors of spatial temperature gradient initiation cannot be eliminated completely.In order to suppress temperature effect further, the extremely symmetrical winding of staggered form four is suggested (United States Patent (USP) 5465150), ring entirety is divided into the winding subarea that several meet four pole symmetrical requirements, between adjacent subarea, the winding order of mid point left and right sides optical fiber is contrary, the spatial temperature gradient impact of ring inside is overcome with this, but owing to being wound around the restriction of level, this winding still can not effectively suppress temperature shupe effect errors.
Sensing ring is formed primarily of skeleton, polarization maintaining optical fibre and solidification glue, and ring skeletal support winding optical fiber layer also fixedly becomes overall by solidification glue, improves ring physical strength.According to different physical strengths, thermal parameter and weight demands, skeleton can adopt aluminium alloy or titanium alloy material usually, but these materials all have certain thermal expansivity, with optical fiber and glue perfect matching cannot be solidified, and because optical fiber is wound in skeleton surface under certain tension force, if be subject to the effect of skeleton thermal expansion stress, tension value suffered by optical fiber increases, optical property is damaged, cause ring hydraulic performance decline thus, in addition, winding difference between optical fiber layer, the extremely symmetrical fiber lengths departure brought of speed impact and four of the overall heat conduction of fiber optic loop itself, the principal element of infringement optical fibre gyro temperature performance equally, optical fibre gyro is under temperature changing environment, under particularly severe temperature changing environment, show obvious zero drift.
Summary of the invention
The technical issues that need to address of the present invention are: provide a kind of sensing ring preparation method suppressing Fiber Optic Gyroscope Temperature Drift, make up the deficiency of art methods, suppress temperature to the adverse effect of gyro performance, under reduction temperature changing environment, the zero drift of gyro, improves Gyro Precision and through engineering approaches application level.
Technical scheme of the present invention is as described below:
A kind of sensing ring preparation method suppressing Fiber Optic Gyroscope Temperature Drift of the present invention, comprises the following steps: in the upper region of ring skeleton, lower subarea, adopts four pole balanced methods, is respectively wound around a polarization maintaining optical fibre, forms two fiber optic loop; The number of plies of upper region fiber optic loop is consistent with lower subarea fiber optic loop with the number of turn of every layer of inner fiber; From the end on observation of ring skeleton, the sensitive axes direction of two fiber optic loop is contrary; Curing optical fiber ring, removes ring skeleton; Adjust the gyro temperature drift that two fiber optic loop are formed separately, make its equal and opposite in direction, direction contrary.
Preferably, method of the present invention comprises the following steps:
Step 1
Cleaning is provided with the ring skeleton of upper and lower subregion baffle plate;
Step 2
Dehumidifying process is heated to the polarization maintaining optical fibre of ring skeleton and two equal length;
Step 3
In the upper region of ring skeleton, lower subarea, adopt four pole balanced methods, each be wound around a polarization maintaining optical fibre, form two fiber optic loop; The number of plies of upper region fiber optic loop is consistent with lower subarea fiber optic loop with the number of turn of every layer of inner fiber; From the end on observation of ring skeleton, the sensitive axes direction of two fiber optic loop is contrary;
Step 4
Embedding is carried out to fiber optic loop, fills cured adhesive in the space of fiber optic loop, then carry out the operation of temperature environment curing process; The fiber optic loop of removing upper and lower two subareas of ring skeleton reserves the optical fiber pigtail of certain length;
Step 5
By the gyro temperature drift that the tail optical fiber length adjusting two fiber optic loop is formed to adjust it, the gyro temperature drift equal and opposite in direction that two fiber optic loop are formed separately, direction are contrary.
In step 2, heating-up temperature is 60 ~ 100 DEG C, and be preferably 80 DEG C, temperature retention time is 5 ~ 20 hours, is preferably 5 hours; In step 4, solidification temperature is 50 ~ 60 DEG C, and set time is 20h, and upper and lower two subarea polarization maintaining optical fibres are reserved optical fiber pigtail length and are greater than 2 meters.
Step 3 specifically comprises the following steps:
Adopt a wherein polarization maintaining optical fibre, carry out the Optical Fiber Winding of ring skeleton upper region: the starting point of upper region Optical Fiber Winding is positioned at the coboundary of whole ring skeleton, polarization maintaining optical fibre is wound around: clockwise direction is wound around the optical fiber of mid point side according to four pole balanced methods, be wound to baffle plate place in the middle part of ring skeleton from top to bottom to stop, form the first optical fiber layer; Then the optical fiber of mid point opposite side is according to being counterclockwise wound around, and is wound to baffle plate place from top to bottom, forms the second optical fiber layer; Continue the anticlockwise optical fiber of wrapped anti-clockwise from bottom to top to stop to coboundary frock place, form the 3rd optical fiber layer; The optical fiber that startup clockwise direction is wound around from bottom to top wound clockwise, to coboundary frock, completes the 4th layer of Optical Fiber Winding of upper region, completes the winding of four pole symmetric periodics thus, and Using such method completes four extremely symmetrical windings of whole optical fiber afterwards;
Get a remaining optical fiber, carry out the Optical Fiber Winding in subarea under ring skeleton: the starting point of lower subarea Optical Fiber Winding is positioned at the lower limb of whole ring skeleton, polarization maintaining optical fibre is wound around: clockwise direction is wound around the optical fiber of mid point side according to four pole balanced methods, be wound to baffle plate place in the middle part of ring skeleton from bottom to top to stop, form the first optical fiber layer; Then the optical fiber of mid point opposite side is according to being counterclockwise wound around, and is wound to baffle plate place from bottom to top, forms the second optical fiber layer; Continue the anticlockwise optical fiber of wrapped anti-clockwise from top to bottom to stop to lower limb frock place, form the 3rd optical fiber layer; The optical fiber that startup clockwise direction is wound around from top to bottom wound clockwise, to lower limb frock, completes the 4th layer of Optical Fiber Winding in lower subarea, completes the winding of four pole symmetric periodics thus, and Using such method completes four extremely symmetrical windings of whole optical fiber afterwards.
Step 5 specifically comprises the following steps:
Adopt the optical device that two cover consistance are identical, according to identical assembly technology, upper and lower two fiber optic loop are connected to become respectively the responsive light path of gyro; By adjusting the length of two fiber optic loop tail optical fibers, make the gyro temperature drift equal and opposite in direction that upper and lower two fiber optic loop are formed, direction is contrary.
Beneficial effect of the present invention is:
A kind of sensing ring preparation method suppressing Fiber Optic Gyroscope Temperature Drift of the present invention, a skeleton completes four extremely symmetrical windings of two individual fibers coils, suppresses the shupe phase error that temperature causes, improve the temperature performance of gyro.
Accompanying drawing explanation
Fig. 1 is the sensing ring cross-sectional view of suppression Fiber Optic Gyroscope Temperature Drift of the present invention;
Fig. 2 is ring skeleton vertical view.
In figure, 1-ring skeleton, 2-baffle plate, 3-polarization maintaining optical fibre, 4-pressed on ring rises around point, and under 5-, ring rises around point, suitable/counterclockwise fiber of 6-pressed on ring, and under 7-, ring is suitable/fiber counterclockwise.
Embodiment
Below in conjunction with drawings and Examples, the sensing ring preparation method to suppression Fiber Optic Gyroscope Temperature Drift of the present invention is described in detail.
The sensing ring preparation method of suppression Fiber Optic Gyroscope Temperature Drift of the present invention, comprises the following steps:
Step 1
Adopt organic solvent cleaning to be provided with the ring skeleton 1 of upper and lower subregion baffle plate 2, remove the attachment on ring skeleton 1 winding face and pollutant.
Step 2
The polarization maintaining optical fibre 3 of ring skeleton 1 and two equal length is put into high temperature experimental box and is heated to 60 ~ 100 DEG C, be incubated and carry out dehumidifying in 5 ~ 20 hours, remove the steam of material surface, avoid impact solidification adhesive curing.In the present embodiment, heating-up temperature is 80 DEG C, and temperature retention time is 5 hours.
Step 3
The ring skeleton after dehumidifying 1 and two polarization maintaining optical fibres 3 are taken out from high temperature experimental box.
Wire winding tool is installed, adopt a wherein polarization maintaining optical fibre 3, carry out the Optical Fiber Winding of ring skeleton 1 upper region: the starting point of upper region Optical Fiber Winding is positioned at the coboundary of whole ring skeleton 1, polarization maintaining optical fibre 3 is wound around: clockwise direction is wound around the optical fiber of mid point side according to four pole balanced methods, be wound to baffle plate 2 place in the middle part of ring skeleton 1 from top to bottom to stop, form the first optical fiber layer; Then the optical fiber of mid point opposite side is according to being counterclockwise wound around, and is wound to baffle plate 2 place from top to bottom, forms the second optical fiber layer; Continue the anticlockwise optical fiber of wrapped anti-clockwise from bottom to top to stop to coboundary frock place, form the 3rd optical fiber layer; The optical fiber that startup clockwise direction is wound around from bottom to top wound clockwise, to coboundary frock, completes the 4th layer of Optical Fiber Winding of upper region, completes the winding of four pole symmetric periodics thus, and Using such method completes four extremely symmetrical windings of whole optical fiber afterwards.
Get a remaining optical fiber, carry out the Optical Fiber Winding in ring skeleton 1 time subarea: the starting point of lower subarea Optical Fiber Winding is positioned at the lower limb of whole ring skeleton 1, polarization maintaining optical fibre 3 is wound around: clockwise direction is wound around the optical fiber of mid point side according to four pole balanced methods, be wound to baffle plate 2 place in the middle part of ring skeleton 1 from bottom to top to stop, form the first optical fiber layer; Then the optical fiber of mid point opposite side is according to being counterclockwise wound around, and is wound to baffle plate 2 place from bottom to top, forms the second optical fiber layer; Continue the anticlockwise optical fiber of wrapped anti-clockwise from top to bottom to stop to lower limb frock place, form the 3rd optical fiber layer; The optical fiber that startup clockwise direction is wound around from top to bottom wound clockwise, to lower limb frock, completes the 4th layer of Optical Fiber Winding in lower subarea, completes the winding of four pole symmetric periodics thus, and Using such method completes four extremely symmetrical windings of whole optical fiber afterwards.
After ring skeleton 1 is wound around two polarization maintaining optical fibres 3, form fiber optic loop.
Be wound around two, upper and lower subarea independently polarization maintaining optical fibre 3 time, the number of plies that should control upper and lower two subarea inner fibers is consistent with the number of turn of every layer of inner fiber, thus guarantee optical fiber total length as far as possible identical.Two polarization maintaining optical fibre 3 differences are: from the end on observation of ring skeleton 1, and the sensitive axes direction of two fiber optic coils is contrary.
Step 4
Carry out embedding to fiber optic loop, fill cured adhesive in the space of fiber optic loop, then carry out the operation of temperature environment curing process, solidification temperature is 50 ~ 60 DEG C, and set time is 20h.
Fiber optic loop solidification is as a whole, then carries out frock dismounting to ring skeleton 1, and complete upper and lower two optical fiber loops and make, upper and lower two subarea polarization maintaining optical fibre 3 length in reserve are not less than the optical fiber pigtail of 2 meters.
Step 5
Adopt the optical device (comprising detector, coupling mechanism, Y waveguide) that two cover consistance are identical, according to identical assembly technology, upper and lower two fiber optic coils are connected to become respectively the responsive light path of gyro.The method by optical device fiber optic coils being connected to become the responsive light path of gyro is known to the skilled person general knowledge.
Due to the length of upper and lower two fiber optic coils and manufacture craft basically identical, by adjusting the length of two fiber optic coils tail optical fibers, the gyro temperature drift size that upper and lower two fiber optic coils are formed is as far as possible equal, and regular basically identical, but temperature drift direction is contrary.
Step 6
The gyro angular speed that two responsive light path sensitivities of gyro arrive, transfers to gyro treatment circuit; In gyro treatment circuit, after being averaging processing by two responsive angular speeds, the temperature drift that upper and lower two fiber optic coils produce can be cancelled out each other, thus can suppress temperature shupe phase error to greatest extent.
A kind of for suppressing the ring skeleton 1 of the sensing ring preparation method of Fiber Optic Gyroscope Temperature Drift, its overall hollow cylindrical open in upper and lower end face, the middle part of ring skeleton 1 lateral wall vertical direction is provided with the sheet baffle plate 2 that level is stretched out, and ring skeleton 1 is divided into upper and lower two subareas.
In the present embodiment, described ring skeleton 1 adopts aluminium alloy or titanium alloy; Ring skeleton 1 diameter is 100mm; The quantity of sheet baffle plate 2 is preferably 8, it is along the circumferential direction evenly distributed in the middle part of ring skeleton 1 lateral wall, width and baffle plate 2 spacing ratio of baffle plate 2 are preferably 1:1, and the height of baffle plate 2 should be greater than polarization maintaining optical fibre 3 thickness of ring skeleton 1 winding, preferably exceeds 2 ~ 5mm.
Claims (6)
1. suppress a sensing ring preparation method for Fiber Optic Gyroscope Temperature Drift, it is characterized in that: comprise the following steps:
In upper region, the lower subarea of ring skeleton (1), adopt four pole balanced methods, each winding polarization maintaining optical fibre (3), forms two fiber optic loop; The number of plies of upper region fiber optic loop is consistent with lower subarea fiber optic loop with the number of turn of every layer of inner fiber; From the end on observation of ring skeleton (1), the sensitive axes direction of two fiber optic loop is contrary;
Curing optical fiber ring, removes ring skeleton;
Adjust the gyro temperature drift that two fiber optic loop are formed separately, make its equal and opposite in direction, direction contrary.
2. the sensing ring preparation method of suppression Fiber Optic Gyroscope Temperature Drift according to claim 1, is characterized in that: comprise the following steps:
Step 1
Cleaning is provided with the ring skeleton (1) of upper and lower subregion baffle plate (2);
Step 2
Dehumidifying process is heated to the polarization maintaining optical fibre (3) of ring skeleton (1) and two equal length;
Step 3
In upper region, the lower subarea of ring skeleton (1), adopt four pole balanced methods, each winding polarization maintaining optical fibre (3), forms two fiber optic loop; The number of plies of upper region fiber optic loop is consistent with lower subarea fiber optic loop with the number of turn of every layer of inner fiber; From the end on observation of ring skeleton (1), the sensitive axes direction of two fiber optic loop is contrary;
Step 4
Embedding is carried out to fiber optic loop, fills cured adhesive in the space of fiber optic loop, then carry out the operation of temperature environment curing process; The fiber optic loop of removing upper and lower two subareas of ring skeleton reserves the optical fiber pigtail of certain length;
Step 5
By the gyro temperature drift that the tail optical fiber length adjusting two fiber optic loop is formed to adjust it, the gyro temperature drift equal and opposite in direction that two fiber optic loop are formed separately, direction are contrary.
3. the sensing ring preparation method of suppression Fiber Optic Gyroscope Temperature Drift according to claim 2, is characterized in that: in step 2, and heating-up temperature is 60 ~ 100 DEG C, and temperature retention time is 5 ~ 20 hours; In step 4, solidification temperature is 50 ~ 60 DEG C, and set time is 20h, and the reserved optical fiber pigtail length of upper and lower two subarea polarization maintaining optical fibres (3) is greater than 2 meters.
4. the sensing ring preparation method of suppression Fiber Optic Gyroscope Temperature Drift according to claim 3, is characterized in that: in step 2, and heating-up temperature is 80 DEG C, and temperature retention time is 5 hours.
5. the sensing ring preparation method of suppression Fiber Optic Gyroscope Temperature Drift according to claim 2, is characterized in that: step 3 specifically comprises the following steps:
Adopt a wherein polarization maintaining optical fibre (3), carry out the Optical Fiber Winding of ring skeleton (1) upper region: the starting point of upper region Optical Fiber Winding is positioned at the coboundary of whole ring skeleton (1), polarization maintaining optical fibre (3) is wound around: clockwise direction is wound around the optical fiber of mid point side according to four pole balanced methods, be wound to baffle plate (2) place, ring skeleton (1) middle part from top to bottom to stop, form the first optical fiber layer; Then the optical fiber of mid point opposite side is according to being counterclockwise wound around, and is wound to baffle plate (2) place from top to bottom, forms the second optical fiber layer; Continue the anticlockwise optical fiber of wrapped anti-clockwise from bottom to top to stop to coboundary frock place, form the 3rd optical fiber layer; The optical fiber that startup clockwise direction is wound around from bottom to top wound clockwise, to coboundary frock, completes the 4th layer of Optical Fiber Winding of upper region, completes the winding of four pole symmetric periodics thus, and Using such method completes four extremely symmetrical windings of whole optical fiber afterwards;
Get a remaining optical fiber, carry out the Optical Fiber Winding in subarea under ring skeleton (1): the starting point of lower subarea Optical Fiber Winding is positioned at the lower limb of whole ring skeleton (1), polarization maintaining optical fibre (3) is wound around: clockwise direction is wound around the optical fiber of mid point side according to four pole balanced methods, be wound to baffle plate (2) place, ring skeleton (1) middle part from bottom to top to stop, form the first optical fiber layer; Then the optical fiber of mid point opposite side is according to being counterclockwise wound around, and is wound to baffle plate (2) place from bottom to top, forms the second optical fiber layer; Continue the anticlockwise optical fiber of wrapped anti-clockwise from top to bottom to stop to lower limb frock place, form the 3rd optical fiber layer; The optical fiber that startup clockwise direction is wound around from top to bottom wound clockwise, to lower limb frock, completes the 4th layer of Optical Fiber Winding in lower subarea, completes the winding of four pole symmetric periodics thus, and Using such method completes four extremely symmetrical windings of whole optical fiber afterwards.
6. the sensing ring preparation method of the suppression Fiber Optic Gyroscope Temperature Drift according to claim 2 or 5, is characterized in that: step 5 specifically comprises the following steps:
Adopt the optical device that two cover consistance are identical, according to identical assembly technology, upper and lower two fiber optic loop are connected to become respectively the responsive light path of gyro; By adjusting the length of two fiber optic loop tail optical fibers, make the gyro temperature drift equal and opposite in direction that upper and lower two fiber optic loop are formed, direction is contrary.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546783A (en) * | 2015-09-17 | 2017-03-29 | 北京自动化控制设备研究所 | A kind of preparation method of exoskeletal polarization maintaining optical fibre ring retard |
| CN108592901A (en) * | 2018-04-27 | 2018-09-28 | 华中光电技术研究所（中国船舶重工集团有限公司第七七研究所） | A kind of Double-pillar fiber optic loop around ring skeleton |
| CN108775898A (en) * | 2018-03-19 | 2018-11-09 | 哈尔滨工程大学 | A kind of fiber optic loop and preparation method thereof inhibiting optical fibre gyroscope magnetic field susceptibility |
| CN109141480A (en) * | 2018-10-31 | 2019-01-04 | 中国船舶重工集团公司第七0七研究所 | A kind of optical fibre gyro ring bonding failure analysis methods |
| CN109737947A (en) * | 2019-02-20 | 2019-05-10 | 哈尔滨工程大学 | A kind of four ring design optical fibre gyro fiber optic loop preparation methods |
| CN109974685A (en) * | 2019-04-12 | 2019-07-05 | 中航捷锐（北京）光电技术有限公司 | A kind of preparation method of environment sensitive ring |
| CN110160556A (en) * | 2019-05-17 | 2019-08-23 | 中北大学 | A kind of skeleton of optical fibre gyro sensitive line ring and the sub- winding of symmetrical chiasma |
| CN112129280A (en) * | 2020-09-18 | 2020-12-25 | 中国船舶重工集团公司第七0七研究所 | Design method of optical fiber ring for high-precision optical fiber gyroscope |
| CN112504259A (en) * | 2020-12-18 | 2021-03-16 | 重庆华渝电气集团有限公司 | Optical fiber ring winding method with bidirectional temperature inhibition effect |
| CN114279429A (en) * | 2021-12-09 | 2022-04-05 | 中国兵器工业导航与控制技术研究所 | Method for reducing temperature sensitivity of fiber-optic gyroscope |
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| CN106546783A (en) * | 2015-09-17 | 2017-03-29 | 北京自动化控制设备研究所 | A kind of preparation method of exoskeletal polarization maintaining optical fibre ring retard |
| CN106546783B (en) * | 2015-09-17 | 2019-09-17 | 北京自动化控制设备研究所 | A kind of preparation method of exoskeletal polarization maintaining optical fibre ring retard |
| CN108775898B (en) * | 2018-03-19 | 2021-11-23 | 哈尔滨工程大学 | Optical fiber ring for inhibiting magnetic field sensitivity of optical fiber gyroscope and preparation method thereof |
| CN108775898A (en) * | 2018-03-19 | 2018-11-09 | 哈尔滨工程大学 | A kind of fiber optic loop and preparation method thereof inhibiting optical fibre gyroscope magnetic field susceptibility |
| CN108592901A (en) * | 2018-04-27 | 2018-09-28 | 华中光电技术研究所（中国船舶重工集团有限公司第七七研究所） | A kind of Double-pillar fiber optic loop around ring skeleton |
| CN109141480A (en) * | 2018-10-31 | 2019-01-04 | 中国船舶重工集团公司第七0七研究所 | A kind of optical fibre gyro ring bonding failure analysis methods |
| CN109737947A (en) * | 2019-02-20 | 2019-05-10 | 哈尔滨工程大学 | A kind of four ring design optical fibre gyro fiber optic loop preparation methods |
| CN109974685A (en) * | 2019-04-12 | 2019-07-05 | 中航捷锐（北京）光电技术有限公司 | A kind of preparation method of environment sensitive ring |
| CN110160556A (en) * | 2019-05-17 | 2019-08-23 | 中北大学 | A kind of skeleton of optical fibre gyro sensitive line ring and the sub- winding of symmetrical chiasma |
| CN112129280A (en) * | 2020-09-18 | 2020-12-25 | 中国船舶重工集团公司第七0七研究所 | Design method of optical fiber ring for high-precision optical fiber gyroscope |
| CN112129280B (en) * | 2020-09-18 | 2022-06-17 | 中国船舶重工集团公司第七0七研究所 | Design method of optical fiber ring for high-precision optical fiber gyroscope |
| CN112504259A (en) * | 2020-12-18 | 2021-03-16 | 重庆华渝电气集团有限公司 | Optical fiber ring winding method with bidirectional temperature inhibition effect |
| CN112504259B (en) * | 2020-12-18 | 2022-07-01 | 重庆华渝电气集团有限公司 | Optical fiber ring winding method with bidirectional temperature inhibition effect |
| CN114279429A (en) * | 2021-12-09 | 2022-04-05 | 中国兵器工业导航与控制技术研究所 | Method for reducing temperature sensitivity of fiber-optic gyroscope |
| CN116045955A (en) * | 2023-03-31 | 2023-05-02 | 中国船舶集团有限公司第七〇七研究所 | Optical fiber ring and optical fiber gyro for reducing temperature rise expansion stress based on intermediate layer |
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