CN110082855B - Device and method for multi-fiber grating continuous writing and on-line testing - Google Patents
Device and method for multi-fiber grating continuous writing and on-line testing Download PDFInfo
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- CN110082855B CN110082855B CN201810079001.8A CN201810079001A CN110082855B CN 110082855 B CN110082855 B CN 110082855B CN 201810079001 A CN201810079001 A CN 201810079001A CN 110082855 B CN110082855 B CN 110082855B
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- 239000000835 fiber Substances 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 title claims abstract description 17
- 239000013307 optical fiber Substances 0.000 claims abstract description 90
- 230000003287 optical effect Effects 0.000 claims abstract description 61
- 238000001228 spectrum Methods 0.000 claims abstract description 34
- 238000012544 monitoring process Methods 0.000 claims description 5
- 239000011247 coating layer Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 32
- 238000010924 continuous production Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000036211 photosensitivity Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
- G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
- G02B6/02123—Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
- G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
- G02B6/02123—Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating
- G02B6/02142—Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating based on illuminating or irradiating an amplitude mask, i.e. a mask having a repetitive intensity modulating pattern
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The invention discloses a device and a method for multi-fiber grating continuous inscription and online test, wherein a plurality of optical fibers are pre-fixed on a plurality of movable optical fiber independent clamping modules at one time, the optical fiber independent modules are installed at equal intervals and are connected with a guide rail platform capable of moving relative to an inscription platform, the tail ends of the optical fibers are uniformly connected with an optical spectrum analyzer through an optical switch, and the guide rail platform carrying the optical fiber independent clamping devices realizes intermittent equal feeding movement relative to a phase mask plate by controlling the movement of the guide rail platform. The corresponding current writing optical fiber during writing is accessed to the optical spectrum analyzer through the optical switch, and the continuous production and manufacturing of the online test of the multi-fiber grating are realized. The method greatly reduces manual operation in the production process, improves the production efficiency by times, greatly reduces the manufacturing cost, and is suitable for scenes of mass production of the fiber bragg gratings.
Description
Technical Field
The invention relates to the field of production and manufacturing of optical communication passive devices, in particular to a device and a method for continuous multi-fiber grating inscribing and online testing.
Background
Fiber Bragg Grating (FBG) is one of the most important photonic devices developed in the last half century since the invention of optical Fiber, FBG forms a spatial phase Grating in the Fiber core of the optical Fiber by ultraviolet exposure by utilizing the photosensitivity of the optical Fiber, which can constitute a plurality of passive devices with unique performance and has been widely applied in the fields of communication, sensing and the like.
The FBG manufacturing technology directly determines the production efficiency of the fiber grating, and the conventional large-scale fiber grating manufacturing technology adopts a phase masking method to manufacture the fiber grating, and forms periodic refractive index change in a fiber core of the fiber based on spatial interference fringes generated by near-field diffraction of an ultraviolet light source on a phase mask plate, thereby forming the fiber grating. The traditional manufacture of the fiber grating is characterized in that after raw material optical fiber is subjected to high-pressure hydrogen loading, the raw material optical fiber is cut into a plurality of single optical fibers according to the product requirement, before the raw material optical fiber is etched, a coating layer is stripped in a preset fiber grating area to form a bare fiber area, when the raw material optical fiber is etched, one optical fiber is clamped on a horizontally fixed fiber holder, the position of the optical fiber is adjusted, the near field diffraction range of a phase mask plate at the position of the bare fiber area is adjusted to a preset value, tail wires at two ends of the optical fiber are connected with an optical spectrum analyzer, a laser ultraviolet light source is controlled to be incident on the bare fiber in front of the phase mask plate to etch the fiber grating, the fiber grating parameter is monitored on line through the optical spectrum analyzer, when the monitored parameter reaches the manufacture requirement, the ultraviolet light source is cut off, the optical fiber is taken down from the fiber fixing holder, and the fiber is transferred to the next process, then, the next optical fiber is taken down and the inscription is repeated again. Although the production method of the fiber grating enables mass production, before and after the writing, a large amount of time is needed for manually assembling and disassembling the optical fiber on the fixed clamp, and the tension adjustment is carried out, so that the manual operation amount is large, the production efficiency is low, the manufacturing cost is high, and the productivity cannot be effectively improved.
With the rapid development of the optical fiber sensing and optical communication industries, especially the implementation of FTTH engineering in the global scope, the demand of the fiber grating is increasingly multiplied, and then a large amount of manual operations and low production efficiency make the manufacturing cost of the fiber grating difficult to adapt to mass production with high demand, so that the reduction of the manufacturing cost of the fiber grating becomes the inevitable trend of future development.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a device and a method for multi-fiber grating continuous writing and online testing.
The technical scheme adopted by the invention is as follows:
the utility model provides a device that is used for many fiber grating to carve writing and on-line measuring in succession, it includes the phase place mask, step motor, the guide rail platform, the independent centre gripping module of optic fibre, optical spectrum analyzer and photoswitch, phase place mask fixed mounting carves on the platform in one, the guide rail platform is laid and is carved the platform surface, step motor control guide rail platform carves the platform motion relatively, the independent centre gripping module of optic fibre more than two sets of independent centre gripping modules of optic fibre sets up in pairs in guide rail platform both sides, an optic fibre of every group independent centre gripping module centre gripping of optic fibre, the photoswitch includes first photoswitch and second photoswitch, the tail end of the optic fibre of guide rail platform one side passes through an input of first photoswitch connection optical spectrum analyzer, the tail end of the optic fibre of guide rail platform opposite side passes through another input of second photoswitch connection optical spectrum analyzer.
Furthermore, more than two groups of optical fiber independent clamping modules are arranged on two sides of the guide rail platform at equal intervals.
Further, the stepping motor controls the guide rail platform carrying the independent optical fiber gripper and the phase mask plate to intermittently advance with equal feeding amount.
Furthermore, each optical fiber is clamped by a group of optical fiber independent clamping modules after being applied with pretightening force.
Furthermore, the optical spectrum analyzer is used for monitoring fiber grating writing parameters and controlling the switching of the writing light source, and the first optical switch and the second optical switch are used for selecting optical fibers accessed by the optical spectrum analyzer.
Furthermore, the invention also discloses a method for continuously writing and online testing the multi-fiber grating, which comprises the following steps:
step 1, clamping an optical fiber on an optical fiber independent clamp holder;
step 2, the stepping motor works to drive the guide rail platform to move forward, so that the first group of optical fiber independent clampers move to the scribing position of the near field of the phase mask plate;
step 3, switching the testing channel through the optical switch to make the optical fiber at the current writing position access the optical spectrum analyzer,
step 4, accessing the optical fiber at the writing position into a laser light source, starting writing, and carrying out online parameter monitoring by an optical spectrum analyzer;
step 5, when the optical spectrum analyzer monitors that the parameters of the fiber bragg grating meet the writing requirement, stopping writing and cutting off the laser light source;
step 6, the stepping motor controls the guide rail platform to move to the next position, so that the next group of optical fiber independent clampers move to the writing position of the near field of the phase mask plate; and repeating the steps 3-6 until all the optical fibers are completely written.
Furthermore, in step 1, the optical fiber is clamped after applying a pre-tightening force.
Furthermore, all the optical fibers in the phase mask plate exposure area in the step 1 are bare optical fiber parts with coating layers stripped.
According to the technical scheme, a plurality of optical fibers are fixed on a plurality of movable optical fiber independent clamping modules in advance at one time, the optical fiber independent modules are installed at equal intervals and are connected with a guide rail platform capable of moving relative to an engraving platform, the tail ends of the optical fibers are connected with an optical spectrum analyzer through an optical switch in a unified mode, and the guide rail platform carrying the optical fiber independent clamp is enabled to move relative to a phase mask plate through controlling the movement of the guide rail platform to achieve intermittent equal feeding movement. The corresponding current writing optical fiber during writing is accessed to the optical spectrum analyzer through the optical switch, and the continuous production and manufacture of the online test of the multi-fiber grating are realized. The method greatly reduces manual operation in the production process, improves the production efficiency by times, greatly reduces the manufacturing cost, and is suitable for scenes of mass production of the fiber bragg gratings.
Drawings
The invention is described in further detail below with reference to the accompanying drawings and the detailed description;
FIG. 1 is a schematic diagram of a first group of optical fiber independent clamping modules according to the present invention;
FIG. 2 is a schematic diagram of a second group of optical fiber independent clamping modules according to the present invention;
FIG. 3 is a schematic diagram of a third group of independent fiber clamping modules according to the present invention.
Detailed Description
As shown in one of fig. 1-3, the present invention discloses an apparatus for multi-fiber grating continuous writing and on-line testing, it includes phase mask 101, step motor 102, guide rail platform 103, the independent centre gripping module 104 of optic fibre, optical spectrum analyzer 107 and optical switch 106, phase mask 101 fixed mounting is on one carves the platform, guide rail platform 103 lays in carving the platform surface, step motor 102 controls guide rail platform 103 and carves the platform motion relatively, the independent centre gripping module 104 of optic fibre more than two sets of sets up in pairs in guide rail platform 103 both sides, an optic fibre 105 of the independent centre gripping module 104 centre gripping of every group optic fibre, optical switch 106 includes first optical switch and second optical switch, the tail end of the optic fibre 105 of guide rail platform 103 one side is through an input of first optical switch connection optical spectrum analyzer 107, the tail end of the optic fibre 105 of guide rail platform 103 opposite side is through another input of second optical switch connection optical spectrum analyzer 107.
Further, more than two groups of fiber independent clamping modules 104 are arranged on two sides of the guide rail platform 103 at equal intervals.
Further, the stepping motor 102 controls the rail stage 103 carrying the fiber individual grippers and the phase mask 101 to make intermittent equal-feed-amount advance.
Further, each optical fiber is clamped by a set of fiber independent clamping modules 104 after being applied with a pre-tightening force.
Further, the optical spectrum analyzer 107 is configured to monitor the fiber grating writing parameters and control switching of the writing light source, and the first optical switch and the second optical switch are configured to select an optical fiber accessed by the optical spectrum analyzer 107.
Furthermore, the invention also discloses a method for continuously writing and online testing the multi-fiber grating, which comprises the following steps:
step 1, clamping an optical fiber on an optical fiber independent clamp holder;
step 2, the stepping motor 102 works to drive the guide rail platform 103 to move forward, so that the first group of independent fiber holders move to the writing position of the near field of the phase mask plate 101;
step 3, switching the testing channel through the optical switch 106, so that the optical fiber at the current writing position is accessed to the optical spectrum analyzer 107,
step 4, accessing the optical fiber at the writing position to a laser light source, starting writing, and carrying out online parameter monitoring by an optical spectrum analyzer 107;
step 5, when the optical spectrum analyzer 107 monitors that the parameters of the fiber bragg grating meet the writing requirement, stopping writing and cutting off the laser light source;
step 6, the stepping motor 102 controls the guide rail platform 103 to move to the next position, so that the next group of independent fiber grippers moves to the near-field writing position of the phase mask plate 101; and repeating the steps 3-6 until all the optical fibers are completely written.
Furthermore, in step 1, the optical fiber is clamped after applying a pre-tightening force.
Furthermore, all the optical fibers exposed by the phase mask plate 101 in step 1 are bare fiber portions with coating layers stripped.
The basic principle of the invention is as follows:
the optical fibers applying pre-tightening force are locked on the optical fiber independent clamping modules 104, the optical fiber independent clamping modules are fixed on the guide rail platform 103 controlled by the stepping motor 102 at equal intervals, the tail end of each optical fiber is respectively connected to the optical switches 106 on two sides before the start of writing, and the optical fibers are connected to the optical spectrum analyzer 106 through the optical switches, as shown in fig. 1.
As shown in fig. 1, when a first optical fiber is etched, the first group of optical fiber independent clamping modules are located at the etching position of the near field of the phase mask plate, the optical switch is switched to the first optical fiber channel when the first optical fiber is etched, the optical spectrum analyzer monitors the etching parameters of the first optical fiber on line, when the monitored parameters meet the requirements, the ultraviolet light source is cut off, and the first optical fiber grating is manufactured.
As shown in fig. 2, when the first optical fiber is manufactured, the stepping motor 102 controls the guide rail platform 103 to perform linear motion, and when the first group of optical fiber independent clamping modules are moved, the second group of optical fiber independent clamping modules are accurately controlled to move to the writing position of the near field of the phase mask plate, and at the same time, the optical switch is switched to the current optical fiber testing channel, the laser is connected, and the second optical fiber grating is repeatedly manufactured.
Similarly, as shown in fig. 3, the stepping motor 102 controls the guide rail platform 103 to move the second group of independent fiber clamping modules, and at the same time, the third group of independent fiber clamping modules moves to the near-field writing position of the phase mask, so as to perform continuous fabrication of the third fiber grating, and thus, the continuous writing is repeated.
By adopting the technical scheme, a plurality of optical fibers are fixed on a plurality of movable optical fiber independent clamping modules 104 in advance at one time, the optical fiber independent modules are installed at equal intervals and are connected with a guide rail platform 103 capable of moving relative to an inscription platform, the tail ends of the optical fibers are uniformly connected with an optical spectrum analyzer 107 through an optical switch 106, and the guide rail platform 103 carrying the optical fiber independent clamp holder is controlled to move relative to a phase mask plate 101 to realize intermittent equal feeding movement. The corresponding current writing optical fiber during writing is accessed to the optical spectrum analyzer 107 through the optical switch 106, so that the continuous production manufacturing of the online test of the multi-fiber grating is realized. The method greatly reduces manual operation in the production process, improves the production efficiency by times, greatly reduces the manufacturing cost, and is suitable for scenes of mass production of the fiber bragg gratings.
Claims (8)
1. A device for multi-fiber grating continuous writing and on-line testing is characterized in that: it includes the phase mask piece, step motor, the guide rail platform, the independent centre gripping module of optic fibre, optical spectrum appearance and photoswitch, phase mask piece fixed mounting is on one carves the platform, the guide rail platform is laid and is carved the platform surface, step motor control guide rail platform is carved the platform motion relatively, the independent centre gripping module of optic fibre more than two sets of sets up in pairs in guide rail platform both sides, an optic fibre of the independent centre gripping module centre gripping of every group optic fibre, photoswitch includes first photoswitch and second photoswitch, the tail end of the optic fibre of guide rail platform one side is through an input of first photoswitch connection optical spectrum appearance, the tail end of the optic fibre of guide rail platform opposite side is through another input of second photoswitch connection optical spectrum appearance.
2. The apparatus of claim 1, wherein the apparatus comprises: more than two groups of optical fiber independent clamping modules are arranged on two sides of the guide rail platform at equal intervals.
3. The apparatus of claim 1 or 2, wherein the apparatus comprises: the stepping motor controls the guide rail platform carrying the optical fiber independent clamping module and the phase mask plate to perform intermittent equal-feeding-amount advancing.
4. The apparatus of claim 1, wherein the apparatus comprises: each optical fiber is clamped by a group of optical fiber independent clamping modules after applying pretightening force.
5. The apparatus of claim 1, wherein the apparatus comprises: the optical spectrum analyzer is used for monitoring fiber bragg grating writing parameters and controlling switching of the writing light source, and the first optical switch and the second optical switch are used for selecting optical fibers accessed by the optical spectrum analyzer.
6. A method for multi-fiber grating continuous writing and on-line testing is characterized in that: which comprises the following steps:
step 1, clamping an optical fiber on an optical fiber independent clamping module;
step 2, the stepping motor works to drive the guide rail platform to move, so that the first group of optical fiber independent clamping modules move to the writing position of the near field of the phase mask plate;
step 3, switching the testing channel through the optical switch to make the optical fiber at the current writing position access the optical spectrum analyzer,
step 4, accessing the optical fiber at the writing position into a laser light source, starting writing, and carrying out online parameter monitoring by an optical spectrum analyzer;
step 5, when the optical spectrum analyzer monitors that the parameters of the fiber bragg grating meet the writing requirement, stopping writing and cutting off the laser light source;
step 6, the stepping motor controls the guide rail platform to move to the next position, so that the next group of optical fiber independent clamping modules move to the writing position of the near field of the phase mask plate; and repeating the steps 3-6 until all the optical fibers are completely etched.
7. The method of claim 6, wherein the method comprises the steps of: in step 1, the optical fiber is clamped after applying a pretightening force.
8. The method of claim 6, wherein the method comprises the steps of: the optical fiber areas exposed by the phase mask plate are all bare optical fiber parts with coating layers stripped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810079001.8A CN110082855B (en) | 2018-01-26 | 2018-01-26 | Device and method for multi-fiber grating continuous writing and on-line testing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810079001.8A CN110082855B (en) | 2018-01-26 | 2018-01-26 | Device and method for multi-fiber grating continuous writing and on-line testing |
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| Publication Number | Publication Date |
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| CN110082855A CN110082855A (en) | 2019-08-02 |
| CN110082855B true CN110082855B (en) | 2022-09-20 |
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| CN201810079001.8A Active CN110082855B (en) | 2018-01-26 | 2018-01-26 | Device and method for multi-fiber grating continuous writing and on-line testing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1556424A (en) * | 2003-12-31 | 2004-12-22 | 华中科技大学 | Optical fiber tuning wave filter |
| CN101832761B (en) * | 2010-04-30 | 2013-03-06 | 中国计量学院 | Micro-strain optical fibre sensing on-line monitoring device of high temperature pressure pipeline |
| CN101826697B (en) * | 2010-05-26 | 2011-09-14 | 华中科技大学 | Method for manufacturing distributed Bragg reflection optical fiber laser |
| CN101950914B (en) * | 2010-09-06 | 2011-12-14 | 中国科学院上海光学精密机械研究所 | Single longitudinal mode distributed feedback optical fibre laser with tunable wavelength |
| CN102221452B (en) * | 2011-06-08 | 2012-07-25 | 武汉理工大学 | Real-time monitoring device for online writing weak optical fiber Bragg grating and application method thereof |
| US20130272656A1 (en) * | 2012-04-11 | 2013-10-17 | O/E Land Inc. | Double-Sided Compression-Tuned Fiber Bragg Grating |
| CN105204295B (en) * | 2015-05-29 | 2017-05-31 | 中国科学院上海光学精密机械研究所 | Phase mask plate switching device |
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