CN105938219A - Apparatus and method for manufacturing fiber grating on the basis of gamma radiation source - Google Patents
Apparatus and method for manufacturing fiber grating on the basis of gamma radiation source Download PDFInfo
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- CN105938219A CN105938219A CN201610398751.2A CN201610398751A CN105938219A CN 105938219 A CN105938219 A CN 105938219A CN 201610398751 A CN201610398751 A CN 201610398751A CN 105938219 A CN105938219 A CN 105938219A
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- Prior art keywords
- fiber
- fiber grating
- optical fiber
- platform
- radiation source
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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
- 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
Abstract
The invention discloses an apparatus and method for manufacturing a fiber grating on the basis of a gamma radiation source, and belongs to the technical field of fiber grating manufacturing. The apparatus comprises the gamma radiation source, a mask plate, an etching platform and a fiber winder, wherein the etching platform is of a semi-closed box type structure with an opening arranged at the top, the opening of the etching platform is provided with the mask plate, the etching platform is internally provided with the fiber winder, and the gamma radiation source, the mask plate and the fiber winder are successively in opposite arrangement from top to bottom; and the fiber winder comprises a fiber reel and rollers horizontally arranged at the left side and the right side above the fiber reel. According to the invention, the penetrability of the gamma radiation source is high, when the fiber grating is etched, peeling and coat reconstruction are unnecessary, influences exerted on fiber strength and loss are avoided, and the stability of the fiber grating is ensured; and at the same time, the acting area of the gamma radiation source is large, multiple fibers can be arranged in parallel and are etched at the same time, and large-scale batch production is facilitated.
Description
Technical field
The present invention relates to a kind of fiber grating and make the technology in field, a kind of device and method making fiber grating based on gamma emitter.
Background technology
Fiber grating has a wide range of applications.In the communications field, fibre-optical dispersion can be compensated by Fiber Bragg Grating FBG as narrow band filter；LPFG can be as band elimination filter.At sensory field, fiber grating, as distributed sensor, can realize the measurement to physical quantitys such as temperature, strain, electric current, magnetic field, displacement, radiation dose.
In current Fabrication Methods of Fiber Gratings, general employing ultraviolet source is as becoming grid light source, and ultraviolet light can write grating on the optical fiber of major part type to some extent.Owing to fiber coating layer is higher to the absorbance of ultraviolet light, direct inscription can destroy overlay, so needing to peel off the overlay of optical fiber before inscribing grating, inscribing and rebuilding overlay again after terminating.Said process can produce impact to the performance of fiber grating.
Current method of writing direct mainly realizes by changing optical fiber coating layer material, i.e. use the material to UV transparent as optical fiber coating, including acrylate-coated layer and General Electric RTV615 silica gel coat.This technology is changed coat and the mechanical strength of fiber grating is caused irreversible impact；Changing coat makes manufacture efficiency be greatly lowered.
Summary of the invention
The fiber grating that the present invention is directed to cause due to replacing or the reconstruction of coat in prior art impaired, its mechanical performance is made to produce the deficiency of impact, propose a kind of device and method making fiber grating based on gamma emitter, need when avoiding fiber grating to inscribe peel off and rebuild coat, ensure that the stability of fiber grating, and be capable of large-scale mass production.
The present invention is achieved by the following technical solutions,
The present invention relates to a kind of device making fiber grating based on gamma emitter, including: gamma emitter, mask plate, inscription platform and optical fiber coiling device, wherein: inscribing platform is open-topped semiclosed box structure, inscribe and at platform openings, mask plate is set, inscribing platform interior and be provided with optical fiber coiling device, gamma emitter, mask plate and optical fiber coiling device are oppositely arranged the most successively；
Described optical fiber coiling device includes: fiber reel and be positioned at the horizontally disposed roller bearing in the left and right sides above fiber reel.
Described fiber reel is column structure, is axially evenly equipped with some groups of screw-like chutes.
Described roller surface is smooth.
The present invention relates to the manufacture method of the fiber grating of said apparatus, carry out gamma ray radiation process by placing the fiber in optical fiber coiling device, radiation is at room temperature annealed after terminating, and after annealing calibrates fiber grating.
Technique effect
Compared with prior art, the gamma emitter penetrance that the present invention uses is strong, when fiber grating is inscribed without peeling off and rebuilding coat, it is to avoid coat is peeled off and rebuild fiber strength and the impact of loss, it is ensured that the stability of fiber grating；Gamma emitter active area is big simultaneously, and a plurality of optical fiber can be inscribed by arranged in parallel simultaneously, it is simple to large-scale mass production.
Accompanying drawing explanation
Fig. 1 is the variations in refractive index schematic diagram of fiber grating in manufacturing process of the present invention；
Fig. 2 is the basic structure schematic diagram of apparatus of the present invention；
Fig. 3 is the structural representation of part body in apparatus of the present invention, and wherein: (a) is front view, (b) is side view；
Fig. 4 is fiber reel structural representation；
In figure: gamma emitter 1, mask plate 2, inscription platform 3, optical fiber coiling device 4, fiber reel 5, optical fiber 6, roller bearing 7.
Detailed description of the invention
Elaborating embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, gives detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As shown in Figures 2 and 3, the present embodiment relates to a kind of device making fiber grating based on gamma emitter, including: gamma emitter 1, mask plate 2, inscription platform 3 and optical fiber coiling device 4, wherein: inscribing platform 3 is open-topped semiclosed box structure, inscribe platform 3 opening part and mask plate 2 is set, inscribing platform 4 and be internally provided with optical fiber coiling device 4, gamma emitter 1, mask plate 2 and optical fiber coiling device 4 are oppositely arranged the most successively；
Described optical fiber coiling device 4 includes: fiber reel 5 and be positioned at the horizontally disposed roller bearing in the left and right sides 7 above fiber reel 5, and the optical fiber 6 on fiber reel 5 is walked around two roller bearings 7 and is the level of state.
Preferably, described gamma emitter 1 is Co 60；The height adjustable of described gamma emitter 1, thus change radiant intensity, control to inscribe effect and efficiency.
Described mask plate 2 can be replaced according to inscribing requirement, meets fiber grating parameter request.
Described inscription platform 3 uses radiant barrier material.
Described optical fiber coiling device 4 can produce different grating array by changing winding method.
Described fiber reel 5 is column structure, is axially evenly equipped with some groups of screw-like chutes, as shown in Figure 4.
Described roller bearing 7 smooth surface.
The present embodiment relates to the manufacture method of the fiber grating of said apparatus, is loaded by optical fiber 6 in optical fiber coiling device 4, produces different grating array by changing winding method；Then carrying out gamma ray radiation process, radiation is at room temperature annealed after terminating, owing to optical fiber itself exists subtle difference, is needed to calibrate fiber grating and screen after annealing；As it is shown in figure 1, radiate in the annealing process after terminating, optical fibre refractivity progressively declines, after stablizing, before slightly above being inscribed by refracted portion refractive index.
Described annealing time is 25 days.
Claims (6)
1. one kind based on gamma emitter make fiber grating device, it is characterised in that including: gamma emitter, mask plate,
Inscribe platform and optical fiber coiling device, wherein: inscribing platform is open-topped semiclosed box structure, inscribe and arrange at platform openings
Mask plate, inscribes platform interior and is provided with optical fiber coiling device, gamma emitter, mask plate and optical fiber coiling device phase the most successively
To setting；
Described optical fiber coiling device includes: fiber reel and be positioned at the horizontally disposed roller bearing in the left and right sides above fiber reel, wherein: optical fiber
Optical fiber on dish is walked around two roller bearings and is the level of state.
The device making fiber grating based on gamma emitter the most according to claim 1, is characterized in that, described gamma
The height adjustable of radiation source, thus change radiant intensity to control to inscribe effect and efficiency.
3. according to the device making fiber grating based on gamma emitter described in claim 1, it is characterized in that, described inscription is put down
Platform uses radiant barrier material.
4., according to the device making fiber grating based on gamma emitter described in claim 1, it is characterized in that, described fiber reel
For column structure, axially it is evenly equipped with some groups of screw-like chutes.
5. according to the manufacture method of the fiber grating of device described in any of the above-described claim, it is characterised in that place the fiber in light
In fine coiling device, produce different grating array by changing winding method；Then carrying out gamma ray radiation process, radiation terminates
After at room temperature anneal, after annealing, fiber grating is calibrated.
The most according to claim 5, the method making fiber grating, is characterized in that, described annealing time is 37 days.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016102902606 | 2016-05-04 | ||
| CN201610290260 | 2016-05-04 |
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| Publication Number | Publication Date |
|---|---|
| CN105938219A true CN105938219A (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610398751.2A Pending CN105938219A (en) | 2016-05-04 | 2016-06-07 | Apparatus and method for manufacturing fiber grating on the basis of gamma radiation source |
| CN201620548119.7U Active CN205691812U (en) | 2016-05-04 | 2016-06-07 | The device of fiber grating is made based on gamma emitter |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201620548119.7U Active CN205691812U (en) | 2016-05-04 | 2016-06-07 | The device of fiber grating is made based on gamma emitter |
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| CN (2) | CN105938219A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105938219A (en) * | 2016-05-04 | 2016-09-14 | 上海交通大学 | Apparatus and method for manufacturing fiber grating on the basis of gamma radiation source |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6751380B1 (en) * | 1997-11-26 | 2004-06-15 | Mitsubishi Cable Industries, Ltd. | Fiber grating and method and apparatus for fabricating the same |
| CN101675562A (en) * | 2007-04-17 | 2010-03-17 | 株式会社藤仓 | Yb-doped optical fiber photodarkening suppression processing method, photodarkening-suppressed yb-doped optical fiber, and fiber laser |
| CN102998740A (en) * | 2012-11-30 | 2013-03-27 | 燕山大学 | Device and method for simultaneously inscribing multi-wavelength array gratings in ribbon fiber |
| CN103605180A (en) * | 2013-11-20 | 2014-02-26 | 中国科学技术大学 | Etching device for spiral fiber grating fiber grating |
| CN104459875A (en) * | 2014-12-19 | 2015-03-25 | 中国科学院上海光学精密机械研究所 | Automatic phase mask plate switching device |
| CN205691812U (en) * | 2016-05-04 | 2016-11-16 | 上海交通大学 | The device of fiber grating is made based on gamma emitter |
-
2016
- 2016-06-07 CN CN201610398751.2A patent/CN105938219A/en active Pending
- 2016-06-07 CN CN201620548119.7U patent/CN205691812U/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6751380B1 (en) * | 1997-11-26 | 2004-06-15 | Mitsubishi Cable Industries, Ltd. | Fiber grating and method and apparatus for fabricating the same |
| CN101675562A (en) * | 2007-04-17 | 2010-03-17 | 株式会社藤仓 | Yb-doped optical fiber photodarkening suppression processing method, photodarkening-suppressed yb-doped optical fiber, and fiber laser |
| CN102998740A (en) * | 2012-11-30 | 2013-03-27 | 燕山大学 | Device and method for simultaneously inscribing multi-wavelength array gratings in ribbon fiber |
| CN103605180A (en) * | 2013-11-20 | 2014-02-26 | 中国科学技术大学 | Etching device for spiral fiber grating fiber grating |
| CN104459875A (en) * | 2014-12-19 | 2015-03-25 | 中国科学院上海光学精密机械研究所 | Automatic phase mask plate switching device |
| CN205691812U (en) * | 2016-05-04 | 2016-11-16 | 上海交通大学 | The device of fiber grating is made based on gamma emitter |
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| CN205691812U (en) | 2016-11-16 |
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Application publication date: 20160914 |