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

A fiber Bragg and single stress technology, applied in cladding optical fiber, optical waveguide light guide, light guide, etc., can solve the problems of inability to realize bending resolution and affect the use scenarios of inclined fiber Bragg gratings, and achieve the effect of expanding the use scenarios

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

Therefore, although the tilted fiber Bragg grating has directionality, and the response of the cladding mode resonance peak is different when the bending direction is at different angles to the grating surface, it can only distinguish the bending in the semicircular direction, and the direction of the fiber with respect to the gra

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

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Embodiment 1

[0040] Embodiment 1: A Single Stress Element Fiber Slanted Fiber Bragg Grating and Its Preparation Method 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.

[0041] The inclined fiber Bragg grating writing system used in the present invention is as image 3 As shown, the preparation steps are as follows:

[0042] The inclined fiber Bragg grating writing system used in the present invention is as image 3 As shown, the difference between the two methods lies in the exposure orientation of the ultraviolet laser, and the general main preparation steps are as follows:

[0043] 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 ...

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Abstract

The invention provides a single-stress-element optical fiber tilted fiber bragg grating and a preparation method thereof. A single-stress-element optical fiber is a special optical fiber with a singlestress element in a cladding. The single-stress-element optical fiber tilted 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, amicroscope and an optical fiber rotating clamp; and enabling the included angle between the stress element and the grating surface in the fiber core to meet the requirement of the required single-stress-element optical fiber tilted fiber bragg grating. The single-stress-element optical fiber tilted fiber bragg grating can be used for preparing the single-stress-element optical fiber tilted 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 inclined optical fiber Bragg grating and a preparation method thereof, belonging to the technical field of optical fiber devices. [0003] (2) Background technology [0004] Slanted Fiber Bragg Grating (Slanted Fiber Bragg Grating), as an important part of Fiber Bragg Grating, has its unique features. Different from ordinary fiber Bragg gratings, the grating plane of tilted fiber Bragg gratings is no longer perpendicular to the fiber axis, but has a certain tilt angle. The introduction of the slant strengthens the coupling from the forward propagating core mode to the backward propagating cladding mode and radiation mode. Based on this feature, tilted fiber Bragg gratings are widely used in optical filtering, optical fiber sensing, gain flatteners, and polarization-dependent devices. [0005] The conventional phase mask method is used to prepare tilted fiber Bragg gratings. Ther...

Claims

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Application Information

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IPC IPC(8): G02B6/02
CPCG02B6/02076G02B6/02123G02B6/02138
Inventor 苑立波徐致远
Owner GUILIN UNIV OF ELECTRONIC TECH
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