CN101825740A - Rotary writing method of multi-core fiber grating - Google Patents
Rotary writing method of multi-core fiber grating Download PDFInfo
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- CN101825740A CN101825740A CN 201010121582 CN201010121582A CN101825740A CN 101825740 A CN101825740 A CN 101825740A CN 201010121582 CN201010121582 CN 201010121582 CN 201010121582 A CN201010121582 A CN 201010121582A CN 101825740 A CN101825740 A CN 101825740A
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Abstract
The invention provides a rotary writing method of a multi-core fiber grating, which comprises the following steps of stripping one section of coating on a multi-core fiber; fixing the multi-core fiber on a fiber fixture after cleaning treatment; arranging the fiber fixture on a rotary optical device; tightly attaching the multi-core fiber to a mask; regulating the rotary optical device so that one fiber core aligns with a writing optical source; starting an excimer laser, and conducting exposure after the optical source becomes parallel light through collimating and beam expanding; connecting one end of the multi-core fiber to a broadband optical source, and connecting the other end to a spectrograph; monitoring grating formation through the spectrograph, and stopping exposure after achieving the required reflectivity; regulating the rotary optical device to a proper angle so that the next fiber core of the multi-core fiber rightly aligns with the writing source for writing fiber by fiber; and packaging. The invention has the advantages of simple implementation and easy control, and can improve the writing quality of the grating; a plurality of manufactured multi-core fiber gratings are integrated in one fiber, which improves the integration of optical devices in the fiber and can be used for simultaneously measuring a plurality of physical quantities and multi-dimension information.
Description
Technical field
The invention belongs to optical fiber communication and technical field of optical fiber sensing, relate to a kind of manufacturing technology of multi-core fiber grating.
Background technology
Typical optical fiber is single cored structure, constitutes cylindrical optical waveguide by covering around fibre core.And multi-core fiber then is to contain many fibre cores at same surrounding layer, all is clad material around the every fibre core.Therefore, each fibre core all is a fibre-optic waveguide, i.e. integrated many single-core fibers in multi-core fiber.The notion of multi-core fiber just was suggested as far back as the end of the seventies in last century, and purpose is to count this two hang-up of optical cable in order to solve the manufacturing cost and the big core of the highly dense intensity of exploitation that reduce optical fiber cable simultaneously.But up to the nineties in last century, along with the continuous development of optic fibre manufacturing technology and perfect, make multi-core fiber in manufacture process, interior unrelieved stress constantly reduces, and physical strength and reliability improve, and just develop into practicability, commercial stage gradually.Multi-core fiber has a lot of purposes in optical fiber communication and sensory field of optic fibre, utilizes the multiple-beam interference effect can constitute multiple device, for example: optical fiber filter, photoswitch, light wavelength division multiplexing, optical add/drop multiplexer; Utilize multi-core fiber to carry out the energy pumping, can make more powerful fiber laser, rare earth element is mixed in the multi-core fiber, can improve the gain balance characteristic of fiber amplifier.
Adopt multicore structure optical fiber fabrication grating, a plurality of fiber gratings are integrated in the optical fiber, can construct multi-wavelength combination of fiber-optic wave filter; In addition, write the fiber grating group of different wave length, can constitute the distributed fiber grating bend sensor along same multi-core fiber; Adopt the multi-core fiber grating sensor can obtain the information of crooked size and Orientation simultaneously, multi-core fiber grating can be measured simultaneously and good sensitivity arranged different kinds of parameters such as strain and bendings.
The single-core fiber grating is that theoretical analysis or manufacture craft are all quite ripe at present, but non-same plane multi-core fiber grating majority all is to adopt a side exposure technique [W.N.MacPherson, Meas.Sci.Technol.15,1642,2004 and United States Patent (USP) NO.20070201793A1], a plurality of fibre core grating one-time writes, the grating that utilizes this kind preparation method to make, different fibre core pitch are inconsistent, each optical grating reflection peak value difference is also bigger, from writing light beam fibre core far away, refraction index changing is very little, and reflection peak is less, resonance wavelength is also longer, and satisfy fixing relation between a plurality of gratings, tunability is relatively poor, and optical fiber self prism effect is also influential to each grating characteristic.
Summary of the invention
The object of the present invention is to provide a kind of method simple, the rotary writing method of the multi-core fiber grating that tunability is big.
The object of the present invention is achieved like this:
Mainly may further comprise the steps:
1, gets a multi-core fiber, will be wherein one section divest overlay, carry out after the cleaning multi-core fiber being fixed on the fiber clamp, fiber clamp places on the rotary optical device, multi-core fiber is close to phase mask plate, regulates the rotary optical device and makes a fibre core aligning of multi-core fiber write light source;
2, open excimer laser, behind collimator and extender, become directional light, expose;
3, multi-core fiber one termination is gone into wideband light source, and the other end inserts spectrometer; Form by spectrometer monitoring grating, stop exposure when reaching required reflectivity;
4, adjusting rotary optical device faces the next fibre core of multi-core fiber to suitable angle and writes light source, repetition 2-3 step, and fibre core writes one by one;
5, encapsulate.
Described multi-core fiber be a plurality of fibre cores not on same plane, each fibre core is distributed on the concentric circumferences, each fibre core is from covering outer boundary close together, the distance between each fibre core is bigger, does not have the multi-core fiber intercouple between fibre core.
Described multi-core fiber is a light-sensitive optical fibre, and the photosensitivity of each fibre core is identical or different; The refractive index of each fibre core of multi-core fiber is identical or different; The core diameter size of each fibre core of multi-core fiber is identical or different.
The cycle and the shape of phase mask plate of at every turn writing fashionable selection is identical or different.
The present invention has proposed a kind of rotary multi-core fiber grating and has write technology in order to solve the problem that prior art exists, and writes a fibre core grating, onrelevant between a plurality of gratings at every turn.This method preparation is simple, and tunability is big.The invention process is easy, and manufacturing process is easy to control, can improve grating greatly and write quality; A plurality of fiber gratings of made are integrated in the optical fiber, can improve optical device integrated in optical fiber, measure when can carry out a plurality of physical quantitys and multidimensional information.
Main points of the present invention are that optical fiber contains a plurality of fibre cores, and a plurality of fibre cores are not or not same plane, and each fibre core is distributed on the concentric circumferences, and each fibre core is from covering outer boundary close together, and the distance between each fibre core is bigger, do not have between fibre core to intercouple; It is to utilize a precision optics that multi-core fiber grating writes, fiber clamp is fixed on this device, only write a fibre core at every turn, write and fashionablely at first optical fiber is fixed on the fiber clamp, regulate precision optics, optical fiber rotates thereupon, make a certain fiber cores aim at ultraviolet source, utilize phase mask plate to write a fiber grating, write the back and regulate the position that the rotary optical device changes each fibre core in the optical fiber, next fibre core to be written is aimed at write light source, be carved into second grating, by that analogy, write one by one; Write the phase mask plate interchangeable, phase mask plate can have different cycles and different shapes at every turn.
The described accurate rotation of changeing optical devices is accurately controlled by stepper motor, and device for precisely regulating can rotate adjusting at any angle.Multi-core fiber is a light-sensitive optical fibre, and each fibre core can have different photosensitivity; A plurality of fibre cores of multi-core fiber can have different refractive indexes and different core diameter sizes.
Description of drawings
Fig. 1 is that (a) is four-core optical fiber grating structure synoptic diagram; Fig. 1 (b) is three core fibre optical grating construction synoptic diagram; Fig. 1 (c) is a twin-core fiber optical grating construction synoptic diagram.
Fig. 2 is the rotary optical device synoptic diagram that the present invention is used to make multi-core fiber grating.
Fig. 3 (a)-Fig. 3 (c) is the present invention's optical fiber rotation synoptic diagram when making multi-core fiber grating.
Embodiment
For example the present invention is done description in more detail below in conjunction with accompanying drawing:
The implication of each label is among the figure: the 1-fibre cladding; The 2-fibre core; The 3-fiber grating; The multi-core fiber of 4-grating to be written; The 5-ultraviolet light beam; 6-ultraviolet light beam collimating and beam expanding system; 7-is ultraviolet light behind collimator and extender; The 8-phase mask plate; The 9-fiber clamp; 10-multidimensional adjusting bracket; The accurate rotary optical device of 11-step motor control; 12-two-dimensional adjustment frame; The accurate moveable platform of 13-; The 14-optical table.
Embodiment 1:
Consult the device synoptic diagram that Fig. 2 the present invention is used to make multi-core fiber grating.
The embodiment of the method for making of four-core fiber grating of the present invention specifically may further comprise the steps:
1, gets a multi-core fiber 4, optical fiber has four fibre cores, and four fibre cores are symmetrically distributed in (as Fig. 3 (a)) on the concentric circumferences, divest the overlay of 3-4cm length of fibre, carry out being fixed on the fiber clamp 9 after the cleaning, utilize the position of each fibre core of microscopic examination;
2, control phase mask plate 8 is close to optical fiber, regulates multidimensional adjusting bracket 10 optical fiber and phase mask plate 8 are parallel to each other;
3, regulate rotary optical device 11 by step motor control some fibre cores of optical fiber are adjusted to over against phase mask plate 8, will be fixing after mixing up;
4, ultraviolet light beam 5 becomes directional light 7 through ultraviolet light beam collimating and beam expanding system 6, exposes on optical fiber 4 through phase mask plate 8;
5,4 one tail ends of optical fiber utilize beam splitter access band light source, and the other end inserts spectroanalysis instrument observation reflectance spectrum; Open wideband light source, form by spectrometer monitoring grating, stop exposure when reaching required reflectivity, the preparing grating on fibre core is finished;
6, step motor control rotary optical device makes the optical fiber two ends all rotate an angle of 90 degrees, and then next fiber core faces phase mask plate 8 in addition, and the step that repeats 2-5 writes second grating; Then by above-mentioned steps one by one fibre core write, all write grating until all fibre cores;
7, encapsulate, finish the making of four-core fiber grating (seeing Fig. 1 (a)).
Embodiment 2:
The embodiment of the method for making of twin-core fiber grating of the present invention specifically may further comprise the steps:
1, gets a twin-core fiber 4, divest the coat of 3-4cm length of fibre, carry out being fixed on the fiber clamp 9 after the cleaning;
2, control phase mask plate 8 is close to optical fiber, regulates multidimensional adjusting bracket 10 optical fiber and phase mask plate 8 are parallel to each other;
3, utilize each fibre core position of microscopic examination, some fibre cores of optical fiber are adjusted to over against phase mask plate 8 by step motor control rotary optical device 11, will be fixing after mixing up;
4, ultraviolet light beam 5 becomes directional light 7 through ultraviolet light beam collimating and beam expanding system 6, and phase place is exposed on optical fiber 4 through mask plate 8;
5,4 one tail ends of optical fiber utilize beam splitter access band light source, and the other end inserts spectroanalysis instrument observation reflectance spectrum; Open wideband light source, form by spectrometer monitoring grating, stop exposure when reaching required reflectivity, the preparing grating on fibre core is finished;
6, step motor control optical fiber rotary optical device 11, make equal Rotate 180 degree angle, optical fiber two ends, first mask plate is removed, replace another with first mask plate tool in the mask plate of different pitch, still utilize microscope to observe, adjusting makes second fiber core over against phase mask plate 8, and the step that repeats 2-5 writes second grating;
7, encapsulate, finish the making of the twin-core fiber grating (seeing Fig. 1 (c)) that two fibre cores have different reflection wavelengths.
Claims (5)
1. the rotary writing method of a multi-core fiber grating is characterized in that:
(1), gets a multi-core fiber, will be wherein one section divest overlay, carry out after the cleaning multi-core fiber being fixed on the fiber clamp, fiber clamp places on the rotary optical device, multi-core fiber is close to phase mask plate, regulates the rotary optical device and makes a fibre core aligning of multi-core fiber write light source;
(2), open excimer laser, behind collimator and extender, become directional light, expose;
(3), multi-core fiber one termination is gone into wideband light source, other end access spectrometer; Form by spectrometer monitoring grating, stop exposure when reaching required reflectivity;
(4), regulate the rotary optical device and to suitable angle the next fibre core of multi-core fiber faced to write light source, repetition (2)-(3) step, fibre core writes one by one;
(5), encapsulate.
2. the rotary writing method of multi-core fiber grating according to claim 1, it is characterized in that: described multi-core fiber is that a plurality of fibre cores are not or not same plane, each fibre core is distributed on the concentric circumferences, each fibre core is from covering outer boundary close together, distance between each fibre core is bigger, does not have the multi-core fiber that intercouples between fibre core.
3. the rotary writing method of multi-core fiber grating according to claim 1 and 2, it is characterized in that: described multi-core fiber is a light-sensitive optical fibre, and the photosensitivity of each fibre core is identical or different; The refractive index of each fibre core of multi-core fiber is identical or different; The core diameter size of each fibre core of multi-core fiber is identical or different.
4. the rotary writing method of multi-core fiber grating according to claim 1 and 2 is characterized in that: the cycle and the shape of phase mask plate of at every turn writing fashionable selection is identical or different.
5. the rotary writing method of multi-core fiber grating according to claim 3 is characterized in that: the cycle and the shape of phase mask plate of at every turn writing fashionable selection is identical or different.
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| CN 201010121582 CN101825740A (en) | 2010-03-11 | 2010-03-11 | Rotary writing method of multi-core fiber grating |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605180A (en) * | 2013-11-20 | 2014-02-26 | 中国科学技术大学 | Etching device for spiral fiber grating fiber grating |
| CN104267556A (en) * | 2014-09-24 | 2015-01-07 | 中国科学院上海光学精密机械研究所 | Optical fiber phase shifting device capable of compensating optical path difference |
| CN105700069A (en) * | 2016-04-29 | 2016-06-22 | 燕山大学 | Multi-core optical fiber used for preparing multi-core anisotropic grating and grating write-in method |
| CN107783216A (en) * | 2017-10-24 | 2018-03-09 | 武汉锐科光纤激光技术股份有限公司 | A kind of device and method that Chirp gratings are made using Uniform Mask |
| CN107861189A (en) * | 2017-12-11 | 2018-03-30 | 中国电子科技集团公司第四十六研究所 | A kind of preparation method of single fiber integrated form bragg grating array |
| CN108226113A (en) * | 2017-12-27 | 2018-06-29 | 上海如海光电科技有限公司 | Effective UV excites fluorescence measuring device |
| CN108490533A (en) * | 2018-03-20 | 2018-09-04 | 山东省科学院激光研究所 | The production method of multi-core fiber grating, fibre optical sensor and multi-core fiber grating |
| CN109073823A (en) * | 2016-05-12 | 2018-12-21 | 住友电气工业株式会社 | The production method of multi-core optical fiber, fiber bragg grating and fiber bragg grating |
| CN110416865A (en) * | 2019-07-10 | 2019-11-05 | 桂林电子科技大学 | A kind of multicore RE-doped superwide band light comb light source |
| CN111552023A (en) * | 2020-03-29 | 2020-08-18 | 桂林电子科技大学 | Special-shaped core fiber grating preparation technology based on semi-circle phase compensation plate |
| CN111965752A (en) * | 2020-08-12 | 2020-11-20 | 烽火通信科技股份有限公司 | Method and system for manufacturing multi-core fiber grating |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1606706A (en) * | 2000-11-28 | 2005-04-13 | 株式会社藤仓 | Method and device for manufacturing optical fiber grating, optical fiber grating, optical module, and optical communication system |
| US20070201793A1 (en) * | 2006-02-17 | 2007-08-30 | Charles Askins | Multi-core optical fiber and method of making and using same |
-
2010
- 2010-03-11 CN CN 201010121582 patent/CN101825740A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1606706A (en) * | 2000-11-28 | 2005-04-13 | 株式会社藤仓 | Method and device for manufacturing optical fiber grating, optical fiber grating, optical module, and optical communication system |
| US20070201793A1 (en) * | 2006-02-17 | 2007-08-30 | Charles Askins | Multi-core optical fiber and method of making and using same |
Non-Patent Citations (1)
| Title |
|---|
| 《光通信技术》 19981231 苑立波 光纤光栅原理与应用(Ⅱ)-光纤光栅制作方法 第313-316页、图1-7 1-5 第22卷, 第4期 2 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605180A (en) * | 2013-11-20 | 2014-02-26 | 中国科学技术大学 | Etching device for spiral fiber grating fiber grating |
| CN104267556A (en) * | 2014-09-24 | 2015-01-07 | 中国科学院上海光学精密机械研究所 | Optical fiber phase shifting device capable of compensating optical path difference |
| CN104267556B (en) * | 2014-09-24 | 2018-01-12 | 中国科学院上海光学精密机械研究所 | It can compensate for the optical fiber phase changer of optical path difference |
| CN105700069B (en) * | 2016-04-29 | 2018-09-04 | 燕山大学 | It is used to prepare the multi-core optical fiber and grating writing method of the different grid of each core |
| CN105700069A (en) * | 2016-04-29 | 2016-06-22 | 燕山大学 | Multi-core optical fiber used for preparing multi-core anisotropic grating and grating write-in method |
| CN109073823A (en) * | 2016-05-12 | 2018-12-21 | 住友电气工业株式会社 | The production method of multi-core optical fiber, fiber bragg grating and fiber bragg grating |
| CN109073823B (en) * | 2016-05-12 | 2021-01-08 | 住友电气工业株式会社 | Multi-core optical fiber, fiber Bragg grating and manufacturing method of fiber Bragg grating |
| CN107783216A (en) * | 2017-10-24 | 2018-03-09 | 武汉锐科光纤激光技术股份有限公司 | A kind of device and method that Chirp gratings are made using Uniform Mask |
| CN107861189A (en) * | 2017-12-11 | 2018-03-30 | 中国电子科技集团公司第四十六研究所 | A kind of preparation method of single fiber integrated form bragg grating array |
| CN108226113A (en) * | 2017-12-27 | 2018-06-29 | 上海如海光电科技有限公司 | Effective UV excites fluorescence measuring device |
| CN108490533A (en) * | 2018-03-20 | 2018-09-04 | 山东省科学院激光研究所 | The production method of multi-core fiber grating, fibre optical sensor and multi-core fiber grating |
| CN110416865A (en) * | 2019-07-10 | 2019-11-05 | 桂林电子科技大学 | A kind of multicore RE-doped superwide band light comb light source |
| CN111552023A (en) * | 2020-03-29 | 2020-08-18 | 桂林电子科技大学 | Special-shaped core fiber grating preparation technology based on semi-circle phase compensation plate |
| CN111965752A (en) * | 2020-08-12 | 2020-11-20 | 烽火通信科技股份有限公司 | Method and system for manufacturing multi-core fiber grating |
| CN111965752B (en) * | 2020-08-12 | 2022-08-30 | 烽火通信科技股份有限公司 | Method and system for manufacturing multi-core fiber grating |
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Application publication date: 20100908 |