CN113091726A - Optical path device of fiber-optic gyroscope and optical fiber coiling method - Google Patents
Optical path device of fiber-optic gyroscope and optical fiber coiling method Download PDFInfo
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- CN113091726A CN113091726A CN202110460518.3A CN202110460518A CN113091726A CN 113091726 A CN113091726 A CN 113091726A CN 202110460518 A CN202110460518 A CN 202110460518A CN 113091726 A CN113091726 A CN 113091726A
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 96
- 230000003287 optical effect Effects 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000000835 fiber Substances 0.000 claims abstract description 411
- 239000002356 single layer Substances 0.000 claims abstract description 39
- 238000004804 winding Methods 0.000 claims abstract description 23
- 239000003292 glue Substances 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000007526 fusion splicing Methods 0.000 claims description 2
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- 241000555293 Bassariscus astutus Species 0.000 description 8
- 239000010410 layer Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000001680 brushing effect Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
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- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/58—Turn-sensitive devices without moving masses
- G01C19/64—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams
- G01C19/72—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams with counter-rotating light beams in a passive ring, e.g. fibre laser gyrometers
- G01C19/721—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
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Abstract
The application provides a light path device of a fiber-optic gyroscope and a fiber-optic coiling method, wherein the light path device comprises: the optical fiber ring is arranged in parallel with the annular disc fiber structure, and the waveguide, the coupler, the detector and the light source are all arranged at the middle hollow position of the annular disc fiber structure; and tail fibers among the optical fiber loop, the waveguide, the coupler, the detector and the light source are wound on the annular fiber winding structure. Therefore, the problem of gyro performance deterioration caused by improper treatment of the device tail fiber during assembly of the optical fiber gyro is solved through the optical path device of the optical fiber gyro and the single-layer symmetrical coiling method of the device tail fiber for improving the optical path symmetry of the optical fiber gyro by coiling the optical fiber.
Description
Technical Field
The application relates to the technical field of fiber-optic gyroscopes, in particular to a light path device of a fiber-optic gyroscope and an optical fiber coiling method.
Background
The optical fiber gyroscope is used as a novel inertial instrument and has been widely applied to the fields of missiles, airplanes, ships, vehicles and the like due to the advantages of the optical fiber gyroscope in the aspects of precision, power consumption, quality and the like. With the wide application of the optical fiber gyroscope, the number and the types of the optical fiber gyroscope are more and more, and the performance requirement is higher and higher. As a basis for the realization of the sagnac effect, the performance of the optical path directly determines the performance of the gyroscope. The optical path is formed by connecting the optical device and the tail fiber thereof through welding. Along with the demand diversification, also diversify to fiber optic gyroscope performance, functional requirement, the product technical state needs frequent change, leads to the light path to appear reprocessing often. In order to improve the temperature, the vibration performance and the reliability of an optical path, the device in the gyroscope and the tail fiber thereof need to be symmetrically coiled, brushed and cured.
At present, the more common coiling method: an annular winding groove structure is adopted on the gyroscope structure, and tail fibers of the gyroscope device are sequentially wound in the annular winding groove structure. The lengths of two tail fibers of a sensitive loop light path are ensured to be welded in equal length, then the two tail fibers are placed side by side, and the two tail fibers are coiled from the outer ring of the fiber arranging groove to the inner ring and are coiled together; for the tail fiber of the device with the non-sensitive loop, generally, after one tail fiber is welded, the tail fiber is coiled continuously along the tail fiber of the sensitive loop, after one tail fiber is welded, the tail fiber is coiled in the last tail fiber loop, and finally, glue brushing and curing are uniformly carried out. Although the symmetry of the tail fibers can be ensured, all the device tail fibers are coiled together and are easily staggered to cause crossing and twisting among the tail fibers, and after glue brushing and curing, local suspension and stress points are formed to cause the performance of a ring to be reduced under the conditions of variable temperature and vibration.
Disclosure of Invention
In view of the above, an object of the present invention is to provide an optical path apparatus of an optical fiber gyro and an optical fiber coiling method, and a single-layer symmetrical coiling method of a device pigtail for improving optical path symmetry of the optical fiber gyro by the optical path apparatus of the optical fiber gyro and optical fiber coiling, so as to solve the problem of gyro performance deterioration caused by improper handling of the device pigtail during assembly of the optical fiber gyro.
The application mainly comprises the following aspects:
in a first aspect, an embodiment of the present application provides an optical path apparatus for a fiber-optic gyroscope, where the optical path apparatus includes: the optical fiber loop is arranged opposite to the surface of the annular disc fiber structure, and the waveguide piece, the coupler, the detector and the light source are all arranged at the middle hollow position of the annular disc fiber structure;
the optical fiber loop, the waveguide, the coupler, the detector and the tail fiber between the light sources are wound on one side surface of the annular fiber winding structure far away from the optical fiber loop.
In some embodiments, the optical fiber loop and the waveguide are connected by two first pigtails arranged side by side, and the first pigtails are arranged on the surface of the annular disc fiber structure in a single layer; the waveguide and the coupler are connected through a second tail fiber, the second tail fiber is arranged on the surface of the annular disc fiber structure in a single layer and is wound and leaned on the outer side of the first tail fiber; the coupler is connected with the light source through a third tail fiber, and the third tail fiber is arranged on the surface of the annular fiber coiling structure and is wound and leaned on the outer side of the second tail fiber; the coupler is connected with the detector through a fourth tail fiber, and the fourth tail fiber is arranged on the surface of the annular fiber structure and is wound on the outer side of the third tail fiber.
In some embodiments, the first pigtail, the second pigtail, the third pigtail, and the fourth pigtail are secured to the surface of the annular disk fiber structure by an adhesive.
In some embodiments, the adhesive is formed by glue and curing agent according to a preset proportion.
In some embodiments, the first pigtail is formed by fusion splicing a fiber pigtail of a fiber loop with a first waveguide pigtail of the waveguide; the second tail fiber is formed by welding a second waveguide tail fiber of the waveguide with a first coupling tail fiber of the coupler; the third tail fiber is formed by welding a second coupling tail fiber of the coupler with a tail fiber of the light source; the fourth tail fiber is formed by welding the third coupling tail fiber of the coupler with the tail fiber of the detector.
In some embodiments, the surface of the annular fiber winding structure is provided with ribs, and the ribs are arranged around the inner edge of the annular fiber winding structure.
In a second aspect, the present embodiment further provides an optical fiber coiling method applied to the optical path apparatus of the fiber-optic gyroscope according to any one of claims 1 to 6, the optical fiber coiling method including:
connecting the optical fiber ring with two tail fibers of the waveguide piece in equal length, arranging the two tail fibers in parallel side by side to obtain a first tail fiber, coiling the first tail fiber on the surface of the annular fiber coiling structure in a single layer, and arranging the waveguide piece at the middle hollow position of the annular fiber coiling structure;
connecting the tail fiber which connects the waveguide and the coupler to obtain a second tail fiber, wherein the second tail fiber is arranged on the surface of the annular disc fiber structure, is wound on the outer side of the first tail fiber in a single layer, and is arranged at the middle hollow position of the annular fiber structure;
connecting the coupler with the tail fiber of the light source to obtain a third tail fiber, wherein the third tail fiber is arranged on the surface of the annular disc fiber structure, is wound on the outer side of the second tail fiber in a single layer, and is arranged at a middle hollow position of the annular fiber structure;
and connecting the tail fiber connected with the coupler and the detector to obtain a fourth tail fiber, wherein the fourth tail fiber is arranged on the surface of the annular disc fiber structure, is wound on the outer side of the third tail fiber in a single layer, and is arranged at the middle hollow position of the annular fiber structure.
In some embodiments, when the first pigtail is coiled, the annular disk fiber structure is rotated to coil the first pigtail from a side close to an inner edge of the annular disk fiber structure until a root of the first pigtail stops close to the waveguide;
when the second tail fiber is coiled, rotating the annular disk fiber structure, and starting to coil the second tail fiber from one end close to the waveguide along the outermost side of the coiled first tail fiber until the root of the second tail fiber is close to the coupler;
when the third tail fiber is coiled, rotating the annular fiber coiling structure, and starting to wind the third tail fiber from one end close to the coupler along the outermost side of the coiled second tail fiber until the root of the third tail fiber is close to the light source;
when the fourth tail fiber is coiled, the annular fiber coiling structure is rotated, the fourth tail fiber is coiled from one end close to the coupler along the outermost side of the coiled fourth tail fiber, and the coiling is carried out until the root of the fourth tail fiber is close to the detector.
In some embodiments, the annular fiber winding structure is driven to rotate manually or electrically.
In some embodiments, the fiber loop, the waveguide, the coupler, the detector, and the pigtails on the light source are untwisted before obtaining the first pigtail, the second pigtail, the third pigtail, and the fourth pigtail; or a pigtail on the optical fiber loop, the waveguide, the coupler, the detector and the light source are placed in parallel.
The application provides a light path device of a fiber-optic gyroscope and a fiber-optic coiling method, wherein the light path device comprises: the optical fiber loop is arranged opposite to the surface of the annular disc fiber structure, and the waveguide piece, the coupler, the detector and the light source are all arranged at the middle hollow position of the annular disc fiber structure; the optical fiber loop, the waveguide, the coupler, the detector and the tail fiber between the light sources are wound on one side surface of the annular fiber winding structure far away from the optical fiber loop.
Like this, through coiling the tail fibre between each device in the optical path device of fiber-optic gyroscope on the side surface of keeping away from the optical fiber ring of annular dish fine structure, the symmetry of arranging when the tail fibre coiled the fine can be guaranteed, through coiling the fine structurally at annular dish fine, can avoid the tail fibre distortion, save the occupation space of tail fibre simultaneously, solved fiber-optic gyroscope's optical path device when the assembly to a certain extent, because the improper problem that the fiber-optic gyroscope performance that leads to of tail fibre processing of device worsens.
In order to make the aforementioned and other objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below:
drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of an optical path apparatus of a fiber-optic gyroscope according to an embodiment of the present disclosure;
fig. 2 is a schematic connection diagram of an optical path apparatus of a fiber-optic gyroscope according to an embodiment of the present disclosure;
FIG. 3 is a partial schematic view of an annular fiber structure provided in an embodiment of the present application;
FIG. 4 is a top view of the optical circuit device of the fiber-optic gyroscope of FIG. 1;
fig. 5 is a flowchart of an optical fiber coiling method according to an embodiment of the present disclosure.
Icon: a-a loop of optical fiber; b-a waveguide; c-a coupler; d-a light source; e-a detector; f-convex strips; 30-a first pigtail; 31-a first optical fiber ring tail fiber; 32-a second optical fiber ring tail fiber; 33-a second pigtail; 34-a third pigtail; 35-fourth pigtail.
Detailed Description
To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it should be understood that the drawings in the present application are for illustrative and descriptive purposes only and are not used to limit the scope of protection of the present application. Additionally, it should be understood that the schematic drawings are not necessarily drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of the present application. It should be understood that the operations of the flow diagrams may be performed out of order, and that steps without logical context may be performed in reverse order or concurrently. One skilled in the art, under the guidance of this application, may add one or more other operations to, or remove one or more operations from, the flowchart.
In addition, the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
To enable those skilled in the art to utilize the present disclosure, the following embodiments are presented in conjunction with a specific application scenario, "fiber optic gyroscope," which will enable those skilled in the art to apply the general principles defined herein to other embodiments and application scenarios without departing from the spirit and scope of the present disclosure.
The method and the device described below in the embodiments of the present application can be applied to any scene that needs to be used for a fiber-optic gyroscope, and the embodiments of the present application do not limit the specific application scene, and any scheme that uses the optical path device of the fiber-optic gyroscope and the optical fiber coiling method provided in the embodiments of the present application is within the protection scope of the present application.
It should be noted that, in the current stage, a more common coiling method adopts an annular winding slot structure on the top structure, and sequentially coils the tail fibers of the top device therein. The lengths of two tail fibers of a sensitive loop light path are ensured to be welded in equal length, then the two tail fibers are placed side by side, and the two tail fibers are coiled from the outer ring of the fiber arranging groove to the inner ring and are coiled together; for the tail fiber of the device with the non-sensitive loop, generally, after one tail fiber is welded, the tail fiber is coiled continuously along the tail fiber of the sensitive loop, after one tail fiber is welded, the tail fiber is coiled in the last tail fiber loop, and finally, glue brushing and curing are uniformly carried out. Although the symmetry of the tail fibers can be ensured, all the device tail fibers are coiled together and are easily staggered to cause crossing and twisting among the tail fibers, and after glue brushing and curing, local suspension and stress points are formed to cause the performance of a ring to be reduced under the conditions of variable temperature and vibration.
Based on this, this application embodiment provides an optical path device and an optical fiber coiling method of an optical fiber gyroscope, through coiling the tail fiber between each device in the optical path device of the optical fiber gyroscope on the surface of one side of the annular fiber coiling structure far away from the optical fiber ring, the arrangement symmetry when the tail fiber is coiled can be ensured, through coiling the fiber on the annular fiber coiling structure, the tail fiber distortion can be avoided, meanwhile, the occupied space of the tail fiber is saved, and the problem of the performance deterioration of the optical fiber gyroscope caused by improper treatment of the tail fiber of the device when the optical path device of the optical fiber gyroscope is assembled is solved to a certain extent.
For the convenience of understanding of the present application, the technical solutions provided in the present application will be described in detail below with reference to specific embodiments.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an optical path apparatus of a fiber-optic gyroscope according to an embodiment of the present application, as shown in fig. 1, the optical path apparatus includes:
the optical fiber loop is arranged opposite to the surface of the annular disc fiber structure, and the waveguide piece, the coupler, the detector and the light source are all arranged at the middle hollow position of the annular disc fiber structure; the optical fiber loop, the waveguide, the coupler, the detector and the tail fiber between the light sources are wound on one side surface of the annular fiber winding structure far away from the optical fiber loop.
As shown in fig. 1, comprises an optical fiber loop a, a waveguide b, a coupler c, a detector e, a light source d and a rib f.
The circular ring of the optical fiber loop a is parallel to the annular plane of the annular fiber coiling structure, and the optical fiber loop a can be right below or above the annular fiber coiling structure.
The hollow-out annular disc fiber structure is a blank in the center of the annular disc fiber structure, because the waveguide b, the coupler c, the detector e and the light source d are all arranged at the hollow-out position in the annular disc fiber structure in consideration of the size and space limitation of the actual optical fiber gyroscope disc fiber, the light source d is usually fixed on a structural member below or above the blank in the middle of the annular disc fiber structure, and the detector e is fixed on the structural member above or below the blank in the middle of the annular disc fiber structure.
The optical path device also comprises a fixing piece, and the fixing piece is arranged above or below the annular fiber coiling structure; wherein, the fixing piece is used for fixing the light source d and/or the detector e.
Here, the fixing member is used to fix the light source and the detector, the fixing member may be disposed above or below the annular fiber winding structure, and the number of the fixing members may be 1, as in the case of fixing the light source d and the detector e, in this case, the light source d may be on the upper portion or the lower portion of the detector e, and the number of the fixing members may be 2, as one fixing member corresponds to the light source d, and the other fixing member fixes the detector e, but in order to form a closed optical path, the light source d and the detector e need to be disposed on the same side.
Like this, through coiling the tail fibre between each device in the optical path device of fiber-optic gyroscope on the side surface of keeping away from the optical fiber ring of annular dish fine structure, the symmetry of arranging when the tail fibre coiled the fine can be guaranteed, through coiling the fine structurally at annular dish fine, can avoid the tail fibre distortion, save the occupation space of tail fibre simultaneously, solved fiber-optic gyroscope's optical path device when the assembly to a certain extent, because the improper problem that the fiber-optic gyroscope performance that leads to of tail fibre processing of device worsens.
Referring to fig. 2, fig. 2 is a schematic connection diagram of an optical path apparatus of a fiber optic gyroscope according to an embodiment of the present application, as shown in fig. 2:
the optical fiber ring is connected with the waveguide piece through two first tail fibers which are arranged side by side, and the first tail fibers are arranged on the surface of the annular disc fiber structure in a single layer; the waveguide and the coupler are connected through a second tail fiber, the second tail fiber is arranged on the surface of the annular disc fiber structure in a single layer and is wound and leaned on the outer side of the first tail fiber; the coupler is connected with the light source through a third tail fiber, and the third tail fiber is arranged on the surface of the annular fiber coiling structure and is wound and leaned on the outer side of the second tail fiber; the coupler is connected with the detector through a fourth tail fiber, and the fourth tail fiber is arranged on the surface of the annular fiber structure and is wound on the outer side of the third tail fiber.
Wherein, the single-layer symmetrical coiling is that two tail fibers in the first tail fiber are wound on the annular fiber coiling structure together.
Wherein the first pigtail, the second pigtail, the third pigtail and the fourth pigtail are fixed on the surface of the annular disc fiber structure by an adhesive.
The adhesive is formed by glue and a curing agent according to a preset proportion.
The two-component AB thermosetting glue for single-layer fiber coiling is prepared, the curing condition and the curing time of the glue can ensure that single-layer coiled tail fibers are cured in a short time in the process of rotating a fiber coiling disc, the tail fibers are prevented from loosening in the fiber coiling process, the component A is main glue, the component B is a curing agent, A, B glue is prepared according to the weight ratio of 2:1, the curing time of the glue at normal temperature is 2-3 min, and the curing time at high temperature of 40 ℃ is about 30 s-1 min. In order to ensure that glue on the tail fiber of the device can be cured in a short time in the coiling process, the structural member of the coiled fiber can be heated and controlled in temperature, and the temperature on the structure can be controlled between 35 ℃ and 40 ℃.
Like this, through coiling the tail fibre between each device in the optical path device of fiber-optic gyroscope on the side surface of keeping away from the optical fiber ring of annular dish fine structure, the symmetry of arranging when the tail fibre coiled the fine can be guaranteed, through coiling the fine structurally at annular dish fine, can avoid the tail fibre distortion, save the occupation space of tail fibre simultaneously, solved fiber-optic gyroscope's optical path device when the assembly to a certain extent, because the improper problem that the fiber-optic gyroscope performance that leads to of tail fibre processing of device worsens.
Referring to fig. 3, fig. 3 is a partial schematic view of an annular fiber structure provided in an embodiment of the present application, as shown in fig. 3:
the surface of the annular fiber coiling structure is provided with a convex strip, and the convex strip is arranged around the inner edge of the annular fiber coiling structure.
As shown by f in fig. 3, the raised strips f form a circle of L shape surrounding the annular fiber coiling structure, and are used for preventing the first optical fiber loop tail fiber 31 and the second optical fiber loop tail fiber 32 in the first tail fiber 30 from scattering in the coiling process.
Therefore, the problem that the finished coiled fiber is scattered in the fiber coiling process can be effectively solved through the convex structure in the optical path device of the fiber optic gyroscope.
Referring to fig. 4, fig. 4 is a top view of an optical path apparatus of a fiber-optic gyroscope according to an embodiment of the present disclosure, as shown in fig. 4: the optical path device is used for finishing the winding of all tail fibers in all the fiber-optic gyroscopes on the annular fiber winding structure.
Referring to fig. 5, fig. 5 is a flowchart illustrating an optical fiber coiling method according to an embodiment of the present application, where as shown in fig. 5, the optical fiber coiling method includes:
s501: and connecting the optical fiber ring and the two tail fibers of the waveguide piece in equal length, arranging the two tail fibers side by side in parallel to obtain a first tail fiber, coiling the first tail fiber on the surface of the annular fiber coiling structure in a single layer, and arranging the waveguide piece in the middle hollow position of the annular fiber coiling structure.
In the step, two tail fibers between the optical fiber loop a and the waveguide b are connected in equal length and then arranged in parallel side by side to obtain a first tail fiber 30, and the first tail fiber 30 is coiled in a single-layer mode in an annular fiber coiling structure.
Wherein, still include: when the first tail fiber is coiled, the annular disk fiber structure is rotated, and the first tail fiber is coiled from one side close to the inner edge of the annular disk fiber structure until the root of the first tail fiber is stopped at a position close to the waveguide.
Here, the annular fiber winding structure is driven to rotate manually or electrically. When the tail fiber of the optical fiber gyroscope device is coiled, the annular fiber coiling structure can be manually rotated, or the optical fiber gyroscope is placed on a motor rotor by means of an electric turntable, and the annular fiber coiling structure is driven by the motor to rotate to coil the fiber;
in a specific embodiment, the optical fiber loop a and the waveguide b are connected by a single-layer symmetrical coiling method, two tail fibers of the optical fiber loop a and two tail fibers of the waveguide b are welded in equal length to obtain a first tail fiber 30, the first tail fiber 30 comprises a first optical fiber loop tail fiber 31 and a second optical fiber loop tail fiber 32, after welding, the first optical fiber loop tail fiber 31 and the second optical fiber loop tail fiber 32 are placed in parallel in a parallel manner, the first optical fiber loop tail fiber 31 and the second optical fiber loop tail fiber 32 are bent and coiled into a ring shape, and by using a ring-shaped coiling structure, the optical fiber ring is used as a center to rotate the annular fiber coiling structure, the first optical fiber ring tail fiber 31 and the second optical fiber ring tail fiber 32 which are coiled into an annular shape are coiled based on the fact that one end of the optical fiber ring a is close to the starting end, and the first optical fiber ring tail fiber 31 and the second optical fiber ring tail fiber 32 which are coiled into an annular shape are coiled on the annular fiber coiling structure in a single-layer mode. The annular fiber coiling structure is coiled and arranged from the inner layer to the outer layer until the tail ends of the first optical fiber ring tail fiber 31 and the second optical fiber ring tail fiber 32 which are coiled into the annular shape are stopped at one side close to the waveguide, and the tail fibers are reserved to fix the waveguide b at the inner position of the annular fiber coiling structure.
Here, the number of turns of the first pigtail 30 is 3 to 4 turns, the length of the root-end pigtail is 1.2 to 1.5m, and the pigtail length of the fiber optic gyroscope is determined based on the number of turns of the pigtail of the fiber optic gyroscope and the diameter of the coil.
S502: and connecting the tail fiber connected with the waveguide and the coupler to obtain a second tail fiber, wherein the second tail fiber is arranged on the surface of the annular disc fiber structure, is wound on the outer side of the first tail fiber in a single layer, and is arranged at the middle hollow position of the annular fiber structure.
In this step, the pigtail between the waveguide b and the coupler c is connected to obtain a second pigtail 33, and the second pigtail 33 is wound on the annular fiber winding structure in a single layer and is located at the outermost layer of the first pigtail.
Wherein, still include: when the second tail fiber is coiled, the annular disk fiber structure is rotated, the second tail fiber is coiled from one end close to the waveguide along the outermost side of the coiled first tail fiber, and the coiling is carried out until the root of the second tail fiber is close to the coupler.
In a specific embodiment, a single pigtail of the waveguide b is fused with a pigtail of the coupler c connected to the waveguide end to obtain a second pigtail 33, and the annular disk fiber structure is rotated around the waveguide b by using the annular disk fiber structure, so that the second pigtail 33 is started from the end close to the waveguide; the second pigtail 33 is single-layer coiled according to the outermost layer of the first pigtail 30 which has been completed, wherein the tail end of the second pigtail 33 stops until the side close to the coupler, and the pigtail is reserved to fix the coupler at the position inside the annular fiber coil structure.
S503: and connecting the coupler with the tail fiber of the light source to obtain a third tail fiber, wherein the third tail fiber is arranged on the surface of the annular disc fiber structure, is wound on the outer side of the second tail fiber in a single layer, and is arranged in the middle hollow position of the annular fiber structure.
In this step, the pigtail between the coupler c and the light source d is connected to obtain a third pigtail 34, and the third pigtail 34 is wound on the annular fiber winding structure in a single layer and is located at the outermost layer of the second pigtail.
Wherein, still include: when the third tail fiber is coiled, the annular disk fiber structure is rotated, the third tail fiber starts to be coiled from one end close to the coupler along the outermost side of the coiled second tail fiber, and the coiling is carried out until the root of the third tail fiber is close to the light source.
In a specific embodiment, the coupler c is connected with a tail fiber at one end of the light source d and is welded with the tail fiber of the light source d to obtain a third tail fiber 34, the annular fiber coiling structure is rotated by taking the coupler as a center through the annular fiber coiling structure, the third tail fiber 34 is taken as a starting end based on one end close to the coupler c, the third tail fiber 34 is coiled in a single-layer mode according to the outermost layer of the second tail fiber 33 which is coiled, wherein the single-layer coiling is stopped until the tail end of the third tail fiber 34 is close to one side of the light source d, and the tail fiber is reserved to fix the light source d at the inner position of the annular fiber coiling structure.
S504: and connecting the tail fiber connected with the coupler and the detector to obtain a fourth tail fiber, wherein the fourth tail fiber is arranged on the surface of the annular disc fiber structure, is wound on the outer side of the third tail fiber in a single layer, and is arranged at the middle hollow position of the annular fiber structure.
In this step, the pigtail between the coupler c and the detector e is connected to obtain a fourth pigtail 35, and the fourth pigtail 35 is wound on the annular fiber winding structure in a single layer and is located at the outermost layer of the third pigtail 34.
Wherein, still include: when the fourth tail fiber is coiled, the annular fiber coiling structure is rotated, the fourth tail fiber is coiled from one end close to the coupler along the outermost side of the coiled fourth tail fiber, and the coiling is carried out until the root of the fourth tail fiber is close to the detector.
In a specific embodiment, a coupler c is connected with a tail fiber at one end of a detector e and is welded with the tail fiber of the detector e to obtain a fourth tail fiber 35, the annular fiber coiling structure is utilized, the annular fiber coiling structure is rotated by taking the coupler c as a center, and one end of the fourth tail fiber 35 close to the coupler c is taken as a starting end; and winding the fourth tail fiber 35 by a single layer according to the outermost layer of the third tail fiber 34 which is already wound, wherein the winding is stopped until the tail end of the fourth tail fiber 35 is close to one side of the detector e, and the tail fiber is reserved to fix the detector e at the position inside the annular fiber coil structure.
Untwisting the optical fiber loop, the waveguide, the coupler, the detector and the pigtails on the light source before obtaining the first pigtail, the second pigtail, the third pigtail and the fourth pigtail; or a pigtail on the optical fiber loop, the waveguide, the coupler, the detector and the light source are placed in parallel.
Wherein, in order to ensure that all the fiber optic gyroscope device tail fibers are not twisted in the coiling process, all the fiber optic gyroscope device tail fibers need to be untwisted before welding, and some tail fibers are allowed to be placed straightly, for example, the tail fibers carrying bending can be removed.
The application provides an optical fiber coiling method, wherein two tail fibers which are connected with an optical fiber ring and a waveguide piece are connected in equal length and then arranged in parallel side by side to obtain a first tail fiber, the first tail fiber is coiled on the surface of an annular fiber coiling structure in a single layer mode, and the waveguide piece is arranged in the middle hollow position of the annular fiber coiling structure; connecting the tail fiber which connects the waveguide and the coupler to obtain a second tail fiber, wherein the second tail fiber is arranged on the surface of the annular disc fiber structure, is wound on the outer side of the first tail fiber in a single layer, and is arranged at the middle hollow position of the annular fiber structure; connecting the coupler with the tail fiber of the light source to obtain a third tail fiber, wherein the third tail fiber is arranged on the surface of the annular disc fiber structure, is wound on the outer side of the second tail fiber in a single layer, and is arranged at a middle hollow position of the annular fiber structure; and connecting the tail fiber connected with the coupler and the detector to obtain a fourth tail fiber, wherein the fourth tail fiber is arranged on the surface of the annular disc fiber structure, is wound on the outer side of the third tail fiber in a single layer, and is arranged at the middle hollow position of the annular fiber structure.
Therefore, by the method of symmetrical coiling, the tail fiber between the optical fiber loop and the waveguide is symmetrically coiled in a single layer mode, and the tail fibers of other devices except the tail fiber of the optical fiber loop are coiled in a single layer mode, so that the stress-free and torsion-free treatment of the tail fiber of the optical fiber gyroscope device is realized.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. An optical path apparatus of a fiber optic gyroscope, the optical path apparatus comprising: the optical fiber loop is arranged opposite to the surface of the annular disc fiber structure, and the waveguide piece, the coupler, the detector and the light source are all arranged at the middle hollow position of the annular disc fiber structure;
the optical fiber loop, the waveguide, the coupler, the detector and the tail fiber between the light sources are wound on one side surface of the annular fiber winding structure far away from the optical fiber loop.
2. The optical circuit device according to claim 1, wherein the optical fiber loop and the waveguide member are connected by two first pigtails arranged side by side, and the first pigtails are arranged on the surface of the annular fiber winding structure in a single layer; the waveguide and the coupler are connected through a second tail fiber, the second tail fiber is arranged on the surface of the annular disc fiber structure in a single layer and is wound and leaned on the outer side of the first tail fiber; the coupler is connected with the light source through a third tail fiber, and the third tail fiber is arranged on the surface of the annular fiber coiling structure and is wound and leaned on the outer side of the second tail fiber; the coupler is connected with the detector through a fourth tail fiber, and the fourth tail fiber is arranged on the surface of the annular fiber structure and is wound on the outer side of the third tail fiber.
3. The optical circuit device according to claim 2, wherein the first pigtail, the second pigtail, the third pigtail, and the fourth pigtail are fixed on the surface of the annular disk fiber structure by an adhesive.
4. The optical circuit apparatus according to claim 3, wherein the adhesive is formed by a glue and a curing agent arranged according to a predetermined ratio.
5. The optical circuit device according to claim 2, wherein the first pigtail is formed by fusion splicing a fiber pigtail of a fiber loop with a first waveguide pigtail of the waveguide; the second tail fiber is formed by welding a second waveguide tail fiber of the waveguide with a first coupling tail fiber of the coupler; the third tail fiber is formed by welding a second coupling tail fiber of the coupler with a tail fiber of the light source; the fourth tail fiber is formed by welding the third coupling tail fiber of the coupler with the tail fiber of the detector.
6. The optical circuit apparatus according to claim 1, wherein the surface of the annular fiber winding structure is provided with a convex strip, and the convex strip is arranged around the inner edge of the annular fiber winding structure.
7. An optical fiber coiling method applied to the optical path device of the optical fiber gyro as claimed in any one of claims 1 to 6, the optical fiber coiling method comprising:
connecting the optical fiber ring with two tail fibers of the waveguide piece in equal length, arranging the two tail fibers in parallel side by side to obtain a first tail fiber, coiling the first tail fiber on the surface of the annular fiber coiling structure in a single layer, and arranging the waveguide piece at the middle hollow position of the annular fiber coiling structure;
connecting the tail fiber which connects the waveguide and the coupler to obtain a second tail fiber, wherein the second tail fiber is arranged on the surface of the annular disc fiber structure, is wound on the outer side of the first tail fiber in a single layer, and is arranged at the middle hollow position of the annular fiber structure;
connecting the coupler with the tail fiber of the light source to obtain a third tail fiber, wherein the third tail fiber is arranged on the surface of the annular disc fiber structure, is wound on the outer side of the second tail fiber in a single layer, and is arranged at a middle hollow position of the annular fiber structure;
and connecting the tail fiber connected with the coupler and the detector to obtain a fourth tail fiber, wherein the fourth tail fiber is arranged on the surface of the annular disc fiber structure, is wound on the outer side of the third tail fiber in a single layer, and is arranged at the middle hollow position of the annular fiber structure.
8. The optical fiber coiling method as defined in claim 7,
when the first tail fiber is coiled, rotating the annular disk fiber structure, and starting to coil the first tail fiber from one side close to the inner edge of the annular disk fiber structure until the root of the first tail fiber is stopped at a position close to the waveguide;
when the second tail fiber is coiled, rotating the annular disk fiber structure, and starting to coil the second tail fiber from one end close to the waveguide along the outermost side of the coiled first tail fiber until the root of the second tail fiber is close to the coupler;
when the third tail fiber is coiled, rotating the annular fiber coiling structure, and starting to wind the third tail fiber from one end close to the coupler along the outermost side of the coiled second tail fiber until the root of the third tail fiber is close to the light source;
when the fourth tail fiber is coiled, the annular fiber coiling structure is rotated, the fourth tail fiber is coiled from one end close to the coupler along the outermost side of the coiled fourth tail fiber, and the coiling is carried out until the root of the fourth tail fiber is close to the detector.
9. The optical fiber coiling method as defined in claim 8, wherein the annular disc fiber structure is driven to rotate by manual or electric means.
10. The method of coiling optical fibers as defined in claim 7, wherein said optical fiber loops, said waveguide, said coupler, said detector and pigtails on said light source are untwisted before obtaining said first, second, third and fourth pigtails; or a pigtail on the optical fiber loop, the waveguide, the coupler, the detector and the light source are placed in parallel.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116026302A (en) * | 2023-03-27 | 2023-04-28 | 中国船舶集团有限公司第七〇七研究所 | Tail fiber processing method of optical fiber ring assembly of optical fiber gyro |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0791968A (en) * | 1993-09-21 | 1995-04-07 | Furukawa Electric Co Ltd:The | Optical fiber gyroscope |
| CN201600141U (en) * | 2009-12-30 | 2010-10-06 | 中国航天科技集团公司第九研究院第十六研究所 | Fiber optic gyroscope provided with fiber optic pigtail coiling slot |
| CN204115735U (en) * | 2014-07-28 | 2015-01-21 | 重庆华渝电气集团有限公司 | A kind of optical fibre gyro optical path component |
| CN205718993U (en) * | 2016-06-29 | 2016-11-23 | 湖南航天机电设备与特种材料研究所 | A kind of optical fiber sensing ring encapsulating structure |
| CN108168576A (en) * | 2017-12-15 | 2018-06-15 | 中国船舶重工集团公司第七0七研究所 | One kind is used for the symmetrical coiling method of optical fibre gyro ring tail optical fiber |
| CN109631943A (en) * | 2018-12-09 | 2019-04-16 | 西安航天精密机电研究所 | A kind of fiber optic loop evaluation and test module and evaluating system |
| JP2019120592A (en) * | 2018-01-06 | 2019-07-22 | 多摩川精機株式会社 | Optical fiber gyro, method for producing the same, bobbin guide for fiber-over-length storage, and fiber-over-length treatment method of optical fiber gyro |
| CN112161640A (en) * | 2020-08-20 | 2021-01-01 | 河北汉光重工有限责任公司 | Optical path assembly method of fiber-optic gyroscope based on tail fiber stress monitoring |
-
2021
- 2021-04-27 CN CN202110460518.3A patent/CN113091726A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0791968A (en) * | 1993-09-21 | 1995-04-07 | Furukawa Electric Co Ltd:The | Optical fiber gyroscope |
| CN201600141U (en) * | 2009-12-30 | 2010-10-06 | 中国航天科技集团公司第九研究院第十六研究所 | Fiber optic gyroscope provided with fiber optic pigtail coiling slot |
| CN204115735U (en) * | 2014-07-28 | 2015-01-21 | 重庆华渝电气集团有限公司 | A kind of optical fibre gyro optical path component |
| CN205718993U (en) * | 2016-06-29 | 2016-11-23 | 湖南航天机电设备与特种材料研究所 | A kind of optical fiber sensing ring encapsulating structure |
| CN108168576A (en) * | 2017-12-15 | 2018-06-15 | 中国船舶重工集团公司第七0七研究所 | One kind is used for the symmetrical coiling method of optical fibre gyro ring tail optical fiber |
| JP2019120592A (en) * | 2018-01-06 | 2019-07-22 | 多摩川精機株式会社 | Optical fiber gyro, method for producing the same, bobbin guide for fiber-over-length storage, and fiber-over-length treatment method of optical fiber gyro |
| CN109631943A (en) * | 2018-12-09 | 2019-04-16 | 西安航天精密机电研究所 | A kind of fiber optic loop evaluation and test module and evaluating system |
| CN112161640A (en) * | 2020-08-20 | 2021-01-01 | 河北汉光重工有限责任公司 | Optical path assembly method of fiber-optic gyroscope based on tail fiber stress monitoring |
Non-Patent Citations (1)
| Title |
|---|
| 张卓，: ""船用光纤陀螺物理场分析及耦合特性研究"", 《中国博士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116026302A (en) * | 2023-03-27 | 2023-04-28 | 中国船舶集团有限公司第七〇七研究所 | Tail fiber processing method of optical fiber ring assembly of optical fiber gyro |
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Application publication date: 20210709 |