Single-stress-element optical fiber chirped fiber bragg grating and preparation method thereof

A Bragg grating, chirped fiber technology, applied in cladding fiber, optical waveguide light guide, light guide and other directions, can solve the problems of fiber life and performance influence, deformation error fiber bending resistance process affecting the effect of chirped modulation, etc., to save cost effect

Inactive Publication Date: 2020-12-11
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, since the shape recovery of memory alloy needs to reach the transition temperature, the heating process will affect the life and performance of the optical fiber, and its own deformation error and the bending process of the optical fiber will also directly affect the effect of chirp modulation

Method used

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  • Single-stress-element optical fiber chirped fiber bragg grating and preparation method thereof
  • Single-stress-element optical fiber chirped fiber bragg grating and preparation method thereof
  • Single-stress-element optical fiber chirped fiber bragg grating and preparation method thereof

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Embodiment 1

[0038] Example 1: A preparation method of a single-stress-element fiber-chirped fiber Bragg grating

[0039] Preferably, in this embodiment, the diameter of the stress element may be 32 microns, and its geometric center may be 26 microns from the geometric center of the optical fiber.

[0040] The chirped fiber Bragg grating writing system used in the present invention is as image 3 As shown, the preparation steps are as follows:

[0041] Step 1: Set the writing parameters of the excimer laser 3-1, and adjust the relative positions of the mirror part 3-2, the beam expander part 3-3 and the cylindrical lens part 3-4 in the writing system to collimate the ultraviolet laser beam, so that It can accurately focus on the core position of the single stress element optical fiber 3-10 to be written;

[0042] Step 2: Select a fiber Bragg grating phase mask with appropriate parameters, and place it on the mask holder to form fiber Bragg grating phase mask parts 3-7;

[0043] Step 3: ...

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Abstract

The invention provides a single-stress-element optical fiber chirped fiber bragg grating and a preparation method thereof. A single-stress-element optical fiber is a special optical fiber with a single stress element in a cladding. The single-stress-element optical fiber chirped fiber bragg grating is characterized by comprising the following steps: sequentially putting an excimer laser, a reflector, a beam expander, a cylindrical lens, a mask plate and a single stress element optical fiber into a writing light path, and adjusting the optical fiber by using a refractive index matching liquid,a microscope and an optical fiber rotating clamp to ensure that the single stress element does not shield ultraviolet laser, wherein the fiber core is parallel to the mask plate and is vertical to thegrid line of the mask plate, so that the chirped fiber bragg grating can be obtained by using a method of inscribing the uniform fiber bragg grating. The single-stress-element optical fiber chirped fiber bragg grating can be used for preparing the single-stress-element optical fiber chirped fiber bragg grating, and can be widely applied to the technical field of optical fiber devices.

Description

[0001] (1) Technical field [0002] The invention relates to a single stress element optical fiber chirped optical fiber Bragg grating and a preparation method thereof, belonging to the technical field of optical fiber devices. [0003] (2) Background technology [0004] Chirped fiber Bragg grating (CFBG) is a fiber Bragg grating (FBG) whose refractive index or grating period changes along the axial direction. Due to its small size, low loss, wide reflection bandwidth and stable dispersion, it is Widely used in optical fiber dispersion compensation and broadband filters. [0005] When the refractive index or grating period in the fiber Bragg grating region is different, the wavelength that satisfies the Bragg condition of a certain region is also different, so the fiber Bragg grating has a chirp effect, that is, the chirped fiber Bragg grating. In view of this grating feature, there are currently two methods of fabricating chirped fiber Bragg gratings, direct and indirect. (1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02
CPCG02B6/02076G02B6/02138
Inventor 苑立波徐致远
Owner GUILIN UNIV OF ELECTRONIC TECH
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