Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Tunable phase shift optical fiber Bragg optical grating

A technology of Bragg grating and optical fiber, which is applied in cladding optical fiber, optical waveguide and light guide, etc., can solve the problems of slow response speed, complex system structure, poor stability and reliability, etc., and achieve tunable optical filtering function and wavelength selection good sex effect

Active Publication Date: 2011-04-06
XIAMEN UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a fast tuning speed, simple structure, high stability and low cost for the existing tuning means of phase-shifting fiber Bragg gratings, which have slow response speed, complex system structure, poor stability and reliability, etc. Low Tunable Phase Shift Fiber Bragg Gratings

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Tunable phase shift optical fiber Bragg optical grating
  • Tunable phase shift optical fiber Bragg optical grating
  • Tunable phase shift optical fiber Bragg optical grating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.

[0012] see figure 1 , the present invention is provided with two sections of fiber Bragg gratings 1 and 2 with the same period, length and photoinduced refractive index change and a sleeve 3, and the inner diameter of the sleeve 3 matches the outer diameter of the fiber Bragg gratings 1 and 2 , the length of the sleeve 3 is 1-2 cm longer than the sum of the lengths of the fiber Bragg gratings 1 and 2. The two end faces of the fiber Bragg gratings 1 and 2 are flat. The casing 3 is made of glass or ceramic material. The fiber Bragg grating 1 is inserted into the sleeve 3, the end face of the fiber Bragg grating 1 is located in the middle of the sleeve 3, and the fiber Bragg grating 1 and the sleeve 3 are bonded and cured with glue. A refractive index matching liquid 4 is injected (capable of covering the end face of the grating) in the middle of the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A tunable phase-shift fiber bragg grating relates to a phase-shift fiber bragg grating, in particular to a phase-shift bragg grating with a transmission spectrum with the tunable characteristic, which is based on the fiber bragg grating fabry perot structure. The invention provides a tunable phase-shift fiber bragg grating with fast tuning speed, simple structure, high stability and low cost. Thegrating is provided with two segments of fiver bragg gratings; a sleeve tube the inner diameter of which is matched with the outer diameter of the fiber bragg grating is inserted into the two segments of the fiber bragg gratings; the gap between the two segments of the fiber bragg gratings is filled with index matched liquid; a gap length adjusting mechanism is arranged in the gap between the twosegments of the fiber bragg gratings.

Description

technical field [0001] The invention relates to a fiber Bragg grating, in particular to a tunable phase-shifting fiber Bragg grating based on a fiber Bragg grating F-P structure and having a tunable transmission spectrum. Background technique [0002] Phase-shifted Fiber Bragg Grating (Phase-shifted Fiber Bragg Grating, PS-FBG) refers to the introduction of a single (or multiple) discontinuous point of photoinduced refractive index change in the middle of a conventional fiber Bragg grating, resulting in a grating The phase jump, its transmission spectrum will open one (or more) very narrow transmission peaks in the Bragg stop band, so it has very good wavelength selectivity. The so-called π-phase-shifted fiber Bragg grating is the sudden change of the refractive index caused by light at the center position of the fiber Bragg grating for half the grating period. PS-FBG can be written directly with a phase mask (see literature: R.Kashyap, et al, UV written reflectiongrating s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/02
Inventor 董小鹏周金龙林旭锋
Owner XIAMEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com