阅读说明：本技术 一种光纤环制作方法 (Method for manufacturing optical fiber ring ) 是由 黄忠伟 于 2020-07-07 设计创作，主要内容包括：本发明公开了一种光纤环制作方法,包括以下步骤：S1、截取所需长度的光纤；S2、按中点对称将左右两部分光纤分别缠绕在左供纤轮与右供纤轮上；S3、将左供纤轮与右供纤轮固定在左张力控制机构与右张力控制机构上；S4、按四极对称绕法绕制光纤环,当绕制到设计层数一半时,将左供纤轮与右供纤轮互换位置,同时骨架翻转180度,然后继续绕制完成设计层数；S5、引出光纤尾纤并固定光纤环,互换左供纤轮与右供纤轮位置以及翻转骨架之后,原来顺时针缠绕的光纤变为逆时针缠绕,原来逆时针缠绕的光纤变为顺时针缠绕,固定应力偏差将分别对两侧光纤产生影响,使应力偏差被最大限度抑制,甚至消除。(The invention discloses a method for manufacturing an optical fiber ring, which comprises the following steps: s1, cutting the optical fiber with the required length; s2, winding the left and right optical fibers on the left fiber supply wheel and the right fiber supply wheel according to the midpoint symmetry; s3, fixing the left fiber supply wheel and the right fiber supply wheel on the left tension control mechanism and the right tension control mechanism; s4, winding the optical fiber ring according to a four-pole symmetrical winding method, when the number of layers is half of the designed number of layers, interchanging the positions of the left fiber supply wheel and the right fiber supply wheel, simultaneously turning the framework for 180 degrees, and then continuing to wind to finish the designed number of layers; s5, leading out the optical fiber pigtail and fixing the optical fiber ring, after interchanging the positions of the left optical fiber supply wheel and the right optical fiber supply wheel and overturning the framework, changing the optical fiber which is originally wound clockwise into anticlockwise winding, changing the optical fiber which is originally wound anticlockwise into clockwise winding, and fixing stress deviation to respectively influence the optical fibers on two sides, so that the stress deviation is inhibited to the maximum extent or even eliminated.)

1. A method for manufacturing an optical fiber ring is characterized by comprising the following steps:

s1, calculating the length of a required optical fiber according to the design requirement of an optical fiber ring, and intercepting the optical fiber, wherein the two ends of the optical fiber are respectively provided with an optical fiber tail fiber;

s2, winding the two symmetrical parts of the optical fiber along the middle point on a left fiber supply wheel and a right fiber supply wheel respectively;

s3, fixing the left fiber supply wheel on a left tension control mechanism on the left side of the winding equipment, and fixing the right fiber supply wheel on a right tension control mechanism on the right side of the winding equipment, so that the middle point of the optical fiber is positioned right above the framework;

s4, winding the optical fiber according to a quadrupole symmetry winding method, when the optical fiber is wound to a half of a designed layer number, interchanging the positions of the left fiber supply wheel and the right fiber supply wheel, turning the framework by 180 degrees at the same time, and continuing to wind the optical fiber until the optical fiber is wound to the designed layer number;

and S5, leading the optical fiber pigtail out of the framework and fixing the optical fiber ring.

2. The method for manufacturing an optical fiber ring according to claim 1, wherein the step S2 includes:

s21, end point marks are made at two end points of the calculated length of the optical fiber, wherein the left end is a point a, the right end is a point b, a midpoint mark is made at a midpoint between the point a and the point b, and the midpoint mark is a point m;

And S22, winding the left optical fiber at the left side of the point m on the left fiber supply wheel from the point a, winding the right optical fiber at the right side of the point m on the right fiber supply wheel from the point b, wherein the distance between the point m and the left fiber supply wheel is equal to the distance between the point m and the right fiber supply wheel.

3. A method of making an optical fiber ring as defined in claim 2, wherein the frame includes a cylindrical frame body, a front catch tray located at a front end of the frame body, and a rear catch tray located at a rear end of the frame body.

4. The method for manufacturing an optical fiber ring according to claim 3, wherein the step S3 includes:

s31, making a linear mark on the outer circumferential surface of the rear baffle disc along the axial direction of the framework;

s32, the optical fiber is tightly attached to the inner side face of the rear baffle disc and the outer side face of the frame body in a mode of being perpendicular to the axis of the frame, and the m points are aligned with the linear marks.

5. The method for manufacturing an optical fiber ring according to claim 4, wherein the number of design layers is 4n, and step S4 includes:

s41, winding the left optical fiber from the inner side of the rear catch tray to the inner side of the front catch tray in a clockwise direction;

s42, winding the right optical fiber from the inner side of the rear baffle disc to the inner side of the front baffle disc in a counterclockwise direction;

S43, winding the right optical fiber from the inner side of the front baffle disc to the inner side of the rear baffle disc in a counterclockwise direction;

s44, winding the left optical fiber from the inner side of the front baffle disc to the inner side of the rear baffle disc in a clockwise direction;

s45, repeating the steps until 2n layers are wound, interchanging the positions of the left fiber supply wheel and the right fiber supply wheel, and turning the framework 180 degrees;

s46, continuously repeating the step S41 to the step S44 until 4n layers are wound.

6. The method of manufacturing an optical fiber ring according to any one of claims 1 to 5, wherein the tension control standards of the left tension control mechanism and the right tension control mechanism are 5g to 10 g.

7. A method for manufacturing an optical fiber ring according to any one of claims 1 to 5, wherein the wound optical fiber ring is fixed by a vacuum potting method.

8. A method for manufacturing an optical fiber ring according to any one of claims 1 to 5, wherein the wound optical fiber ring is fixed by a dipping method.

9. The method of claim 1, wherein n is an integer greater than or equal to 1.

10. The method of claim 5, wherein the number of turns of the optical fiber loop per layer is 20 to 150 turns.

Technical Field

The invention relates to the technical field of optical fiber ring manufacturing, in particular to an optical fiber ring manufacturing method.

Background

In the optical fiber ring making technology, a quadrupole symmetry method is generally adopted, optical fibers are wound and curing glue is filled on a customized winding device, the quadrupole symmetry method is mainly to wind the optical fibers in sequence from the middle point of one optical fiber in the clockwise direction and the anticlockwise direction respectively, thus, one optical fiber needs to be divided into two parts in advance and placed on two fiber supply wheels, the commonly used four-stage winding device is provided with two sets of tension control mechanisms which bear the two fiber supply wheels respectively to carry out paying-off and tension control so as to ensure that the mutual interference is avoided, in the prior art, the positions of the two fiber supply wheels are always fixed in the quadrupole symmetry optical fiber ring winding process and are used for paying-off and tension control of clockwise and anticlockwise optical fiber winding, the problem of inconsistency of the two sets of tension control mechanisms exists due to the two sets of tension control mechanisms, and the control level difference exists, the stress effect introduced into the optical fiber has fixed deviation, so that the stress in the optical fiber on one side is obviously higher than that in the optical fiber on the other side, so that the stress deviation occurs in the clockwise and counterclockwise optical fibers to form residual detection errors, the stress asymmetry is the most important environmental factor influencing the phase error generated by the optical fiber sensing ring, if the stress deviation exists between two points symmetrical about a midpoint, the final optical fiber ring generates detection angular rate signal errors, particularly for four-pole symmetrical winding, even if no deviation exists between tension control mechanisms on two sides, the residual stress errors inevitably exist in each four-layer structure, and the residual stress errors are accumulated, so that the residual stress errors are larger and larger after 4n layers of optical fibers are wound, and the overall performance of the optical fiber gyroscope is influenced.

Therefore, how to solve the problem that the overall performance of the fiber optic gyroscope is affected by the asymmetry of stress generated in the manufacturing process of the fiber optic ring in the prior art becomes a technical problem which needs to be solved urgently by the technical personnel in the field.

Disclosure of Invention

The invention aims to provide a method for manufacturing an optical fiber ring, which aims to solve the problem that the overall performance of an optical fiber gyroscope is influenced by asymmetric stress generated in the manufacturing process of the optical fiber ring in the prior art.

The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides a method for manufacturing an optical fiber ring, which comprises the following steps:

s1, calculating the length of a required optical fiber according to the design requirement of an optical fiber ring, and intercepting the optical fiber, wherein the two ends of the optical fiber are respectively provided with an optical fiber tail fiber;

s2, winding the two symmetrical parts of the optical fiber along the middle point on a left fiber supply wheel and a right fiber supply wheel respectively;

s3, fixing the left fiber supply wheel on a left tension control mechanism on the left side of the winding equipment, and fixing the right fiber supply wheel on a right tension control mechanism on the right side of the winding equipment, so that the middle point of the optical fiber is positioned right above the framework;

S4, winding the optical fiber according to a quadrupole symmetry winding method, when the optical fiber is wound to a half of a designed layer number, interchanging the positions of the left fiber supply wheel and the right fiber supply wheel, turning the framework by 180 degrees at the same time, and continuing to wind the optical fiber until the optical fiber is wound to the designed layer number;

and S5, leading the optical fiber pigtail out of the framework and fixing the optical fiber ring.

Preferably, step S2 includes:

s21, end point marks are made at two end points of the calculated length of the optical fiber, wherein the left end is a point a, the right end is a point b, a midpoint mark is made at a midpoint between the point a and the point b, and the midpoint mark is a point m;

and S22, winding the left optical fiber at the left side of the point m on the left fiber supply wheel from the point a, winding the right optical fiber at the right side of the point m on the right fiber supply wheel from the point b, wherein the distance between the point m and the left fiber supply wheel is equal to the distance between the point m and the right fiber supply wheel.

Preferably, the skeleton includes the cylinder support body, is located the preceding fender dish of support body front end and is located the back fender dish of support body rear end.

Preferably, step S3 includes:

s31, making a linear mark on the outer circumferential surface of the rear baffle disc along the axial direction of the framework;

S32, the optical fiber is tightly attached to the inner side face of the rear baffle disc and the outer side face of the frame body in a mode of being perpendicular to the axis of the frame, and the m points are aligned with the linear marks.

Preferably, the number of the design layers is 4n, and step S4 includes:

s41, winding the left optical fiber from the inner side of the rear catch tray to the inner side of the front catch tray in a clockwise direction;

s42, winding the right optical fiber from the inner side of the rear baffle disc to the inner side of the front baffle disc in a counterclockwise direction;

s43, winding the right optical fiber from the inner side of the front baffle disc to the inner side of the rear baffle disc in a counterclockwise direction;

s44, winding the left optical fiber from the inner side of the front baffle disc to the inner side of the rear baffle disc in a clockwise direction;

s45, repeating the steps until 2n layers are wound, interchanging the positions of the left fiber supply wheel and the right fiber supply wheel, and turning the framework 180 degrees;

s46, continuously repeating the step S41 to the step S44 until 4n layers are wound.

Preferably, the tension control standard of the left tension control mechanism and the right tension control mechanism is 5g to 10 g.

Preferably, the wound optical fiber ring is fixed by a vacuum potting method.

Preferably, the wound optical fiber ring is fixed by a dipping method.

Preferably, n is an integer greater than or equal to 1.

Preferably, the number of turns of each layer of the optical fiber ring is 20-150.

The invention provides a method for manufacturing an optical fiber ring, which has the beneficial effects that:

the invention provides a method for manufacturing an optical fiber ring, which is different from the prior art in that in the process of winding the optical fiber ring according to a quadrupole symmetry winding method, when the optical fiber ring is wound to half of the designed layer number, a left fiber supply wheel and a right fiber supply wheel are exchanged in position, a framework is turned over for 180 degrees at the same time, then the optical fiber ring is continuously wound until the designed layer number is wound, after the positions of the left fiber supply wheel and the right fiber supply wheel are exchanged and the framework is turned over, the original clockwise wound optical fiber is changed into anticlockwise wound, the original anticlockwise wound optical fiber is changed into clockwise, after the positions of the left fiber supply wheel and the right fiber supply wheel are exchanged, fixed stress deviation respectively influences the optical fibers at two sides, and the optical fiber gyro error effect caused by stress can be expressed:

wherein omega is zero drift of gyroscopeN is the refractive index of the optical fiber, λ is the wavelength of the light, C₀Is the speed of light, beta, under vacuum₀For the propagation constant of light, Δ s (z) represents the amount of stress variation at the z-point of the fiber sensing loop, L is the fiber length and D is the loop diameter, and it can be seen from the formula that such stress deviation will be suppressed to the maximum, or even eliminated, after integration over the entire fiber loop length.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a flow chart of a method for making an optical fiber ring according to an embodiment of the present invention;

FIG. 2 shows specific steps of step S2 in FIG. 1 according to an embodiment of the present invention;

FIG. 3 is a flowchart illustrating specific steps of step S3 in FIG. 1 according to an embodiment of the present invention;

FIG. 4 is a flowchart illustrating specific steps of step S4 in FIG. 1 according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of an optical fiber arrangement according to an embodiment of the present invention;

FIG. 6 is a schematic view of the fiber winding direction shown in an embodiment of the present invention;

FIG. 7 is a diagram showing the position of the winding apparatus when winding the first 2n layers of optical fibers according to the embodiment of the present invention;

fig. 8 is a diagram showing the position of the winding apparatus when winding the 2 n-layered optical fiber according to the embodiment of the present invention.

In the figure: 1. a point; 2. b, point; 3. m points; 4. a framework; 401. a frame body; 402. a front catch tray; 403. a rear catch tray; 5. a left side optical fiber; 6. a right optical fiber; 7. a left fiber supply wheel; 8. a right fiber supply wheel; 9. and (4) optical fiber pigtail.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.

Referring to fig. 1 to 8, the present invention provides a method for manufacturing an optical fiber ring, including the steps of:

s1, calculating the length of a required optical fiber and intercepting the optical fiber with the calculated length according to the design requirement of an optical fiber ring, wherein the two ends of the optical fiber are respectively reserved with an optical fiber pigtail 9;

S2, the optical fiber is symmetrically divided into a left optical fiber 5 and a right optical fiber 6 along the midpoint, the left optical fiber 5 is wound on a left fiber supply wheel 7, and the right optical fiber 6 is wound on a right fiber supply wheel 8;

s3, fixing a left fiber supply wheel 7 on a left tension control mechanism on the left side of the winding device, fixing a right fiber supply wheel 8 on a right tension control mechanism on the right side of the winding device, adjusting the tension of the left tension control mechanism and the right tension control mechanism and the alignment of a guide wheel, and after the adjustment is finished, just positioning the middle point of the optical fiber right above one side of the framework 4;

s4, according to four poles symmetry coiling method coiling optic fibre, when the coiling to the design number of piles half, supply the fine wheel 7 and right side to supply fine wheel 8 to exchange the position with a left side, 180 degrees upsets are done to skeleton 4 simultaneously, then continue the coiling, until having coiled the design number of piles with optic fibre, exchange left side and supply fine wheel 7 and right side and supply fine wheel 8 position and upset skeleton 4 after, original right side optic fibre 6 becomes present left side optic fibre 5, original left side optic fibre 5 becomes present right side optic fibre 6, original clockwise winding's optic fibre becomes anticlockwise winding, original anticlockwise winding's optic fibre becomes clockwise, left side supplies fine wheel 7 and right side to supply fine wheel 8 to exchange the position after, the fixed stress deviation will produce the influence to both sides optic fibre respectively, the optic fibre gyro error effect that causes by the stress can be expressed as:

Wherein, omega is zero drift of the gyroscope, n is refractive index of the optical fiber, lambda is optical wavelength, C₀Is the speed of light, beta, under vacuum₀For the propagation constant of light, Δ s (z) represents the amount of stress variation at the z-point of the fiber sensing loop, L is the fiber length and D is the loop diameter, and it can be seen from the formula that such stress deviation will be suppressed to the maximum, or even eliminated, after integration over the entire fiber loop length.

And S5, leading the optical fiber pigtail 9 out of the framework 4 and fixing the optical fiber ring.

As an optional implementation manner, the step S2 may further specifically include the following steps:

s21, after the optical fiber is intercepted, end point marks are made at two ends of the optical fiber, the distance between the end point marks is the calculated length, the end point mark at the left end can be a point 1, the end point mark at the right end can be a point 2, a midpoint mark is made at the midpoint between the point 1 and the point 2, and the midpoint mark can be an m point 3;

s22, after marking, the optical fiber on the left side of the point m 3 is the optical fiber 5 on the left side, the optical fiber 5 on the left side is wound on the fiber supplying wheel 7, during winding, the point a 1 is positioned at the top of the fiber supplying wheel 7 and starts to wind, the optical fiber on the right side of the point m 3 is the optical fiber 6 on the right side, the optical fiber 6 on the right side is wound on the fiber supplying wheel 8, during winding, the point b 2 is positioned on the fiber supplying wheel 8 on the right side, the top is wound, and after winding is completed, the distance between the point m 3 and the fiber supplying wheel 7 on the left side is equal to the distance.

Further, the above-mentioned framework 4 may include a cylindrical frame body 401 and blocking discs located at two ends of the frame body 401, the blocking disc located at the front end of the frame body 401 is a front blocking disc 402, the blocking disc located at the rear end of the frame body 401 is a rear blocking disc 403, and the above-mentioned step 3 may include the following steps:

s31, linear marks can be made on the outer circumferential surface of the rear baffle disc 403 along the axial direction of the framework 4;

s32, rotating the rear baffle disc 403 to make the linear mark located at the upper position, then tightly attaching the optical fiber to the inner side of the rear baffle disc 403 and the outer side of the frame body 401 in a direction perpendicular to the axis of the frame 4, and aligning the m point 3 with the linear mark, so that the lengths of the optical fiber located at the two sides of the frame 4 can be equal.

Preferably, the optical fiber ring is wound mainly according to a quadrupole symmetry method, the number of design layers can be 4n, where n is an integer greater than or equal to 1, and the quadrupole symmetry winding method comprises the following steps:

s41, winding the left optical fiber 5 at the left side of the m point 3 from the position close to the inner side of the rear baffle disc 403 in the clockwise direction until the optical fiber is close to the position close to the inner side of the front baffle disc 402;

s42, winding the right optical fiber 6 at the right side of the m point 3 from the position tightly attached to the inner side of the rear baffle disc 403 in the counterclockwise direction until the optical fiber is tightly attached to the inner side of the front baffle disc 402;

S43, winding the right optical fiber 6 at the right side of the m point 3 at a position tightly attached to the inner side of the front baffle disc 402 in a counterclockwise direction until the optical fiber is tightly attached to the inner side of the rear baffle disc 403;

s44, winding the left optical fiber 5 at the left side of the m point 3 from the position close to the inner side of the front baffle disc 402 in the clockwise direction until the optical fiber is close to the position close to the inner side of the rear baffle disc 403;

s45, finishing winding for four layers once, namely winding for one period, repeating the steps until the winding is stopped when 2n layers of optical fibers are wound, and at the moment, interchanging the left fiber supply wheel 7 and the right fiber supply wheel 8 left and right, and simultaneously rotating the framework 4 for 180 degrees;

s46, after the position exchange is finished, the steps S41-S42 are continuously executed until 4n layers of optical fibers are wound.

Preferably, the tension control standard of the left tension control mechanism and the right tension control mechanism may be 5g to 10 g.

After the optical fiber is wound, the wound optical fiber ring can be fixed by adopting a vacuum encapsulation method or a gum dipping method.

The number of turns of each layer of the optical fiber ring processed by the optical fiber ring winding method can be 20-150.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention 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 invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.