Inscribing method for sampling fiber bragg grating

A fiber grating and optical fiber technology, which is applied in the field of sampling fiber grating writing, can solve problems such as difficulty in adjusting the wavelength interval, and achieve the effects of wide application, precise adjustment and low production requirements.

Inactive Publication Date: 2014-08-13
UNIV OF SCI & TECH OF CHINA
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  • Abstract
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Problems solved by technology

[0003] At present, the manufacturing method of sampling grating reported at home and abroad is mainly realized by using the holographic phase mask to modulate the exposure light intensity. It needs to customize different masks for different sampling wavelength intervals, and it is difficult to adjust the wavelength interval.

Method used

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  • Inscribing method for sampling fiber bragg grating
  • Inscribing method for sampling fiber bragg grating

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Embodiment Construction

[0012] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings, taking writing Bragg sampling fiber grating as an example. like figure 1 As shown: the writing device is composed of an ultraviolet light source 101, a total reflection mirror 102, a controllable electric translation platform 103, a focusing and collimating cylindrical lens 104, a grating phase mask 105, and an optical fiber clamping and stretching system 106. The ultraviolet light generated by the ultraviolet light source 101 is reflected by the total reflection mirror 102 and irradiates the collimating and focusing cylindrical lens 104 , and is focused onto the grating phase mask 105 through the lens. The transmitted light can generate ±1st-order diffraction after passing through the phase mask, and the interference light formed by the diffracted light exposes the optical fiber 107 to be written. During the writing process, the ...

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Abstract

The invention discloses an inscribing method for a sampling fiber bragg grating. A specific device adopted in the method structurally comprises an ultraviolet source (101), a holophote (102), a controllable electric horizontal-moving platform (103), a cylindrical lens (104), a grating phase mask plate (105) and an optical fiber clamping and stretching system (106). According to the inscribing method for the sampling fiber bragg grating, the Prague type sampling fiber bragg grating can be inscribed, and the inscribed sampling fiber bragg grating has high practicability in the aspects of multi-channel filtering and dispersion compensation. According to the inscribing method for the sampling fiber bragg grating, the structure is simple, stability is high, and adjustability is strong.

Description

technical field [0001] The invention relates to the technical field of writing optical fiber gratings, in particular to a writing method for sampling optical fiber gratings, which realizes sampling of wavelengths by gradually stretching optical fibers to change the period of optical fiber gratings. Background technique [0002] With the rapid development of optical fiber communication, multi-channel filtering and dispersion compensation have become a very important issue that people care about. Sampling fiber grating has the characteristics of multi-channel filtering. It has the characteristics of small size, light weight, low cost, flexibility and convenience, low insertion loss, good compatibility with optical fiber, and good wavelength selectivity. hotspots. Sampling fiber grating is a kind of non-uniform fiber grating, and its Bragg wavelength will also change due to changes in pressure, temperature, strain and stress, so its application in grating sensing technology re...

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Application Information

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IPC IPC(8): G02B6/02G03F7/20
Inventor 周勇王安廷顾春许立新明海
Owner UNIV OF SCI & TECH OF CHINA
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