External-cavity type narrow-linewidth V-groove fiber bragg grating laser

A fiber grating and narrow linewidth technology, applied in the field of lasers, can solve the problems of low coupling efficiency of waveguide external cavity grating lasers, poor vibration resistance and easy noise generation of fiber grating lasers, and achieve stable structure, low loss, and increased The effect of reflectivity

Inactive Publication Date: 2016-12-21
HENAN SHIJIA PHOTONS TECH
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention aims to solve technical problems such as low coupling efficiency of waveguide external cavity grating laser, high manufacturing cost, poor vibration resistance and easy noi

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
  • External-cavity type narrow-linewidth V-groove fiber bragg grating laser
  • External-cavity type narrow-linewidth V-groove fiber bragg grating laser
  • External-cavity type narrow-linewidth V-groove fiber bragg grating laser

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example: as Figure 1-2 As shown, an external cavity type narrow linewidth V-groove fiber grating laser includes a gain medium 1, one end of the gain medium 1 is coated with a high reflection film 2, the other end of the gain medium 1 is coated with an anti-reflection film I3, A fiber grating carrier 4 is arranged outside the gain medium 1 and opposite to the anti-reflection film I3. The upper end face of the fiber grating carrier 4 is provided with a V-shaped groove 5. The included angle of the V-shaped groove 5 is 60 degrees, which is easy to process. .

[0019] One end of the fiber grating 6 is fixed in the V-shaped groove 5 , and the distances from the fiber grating 6 in the V-shaped groove 5 to both sides of the V-shaped groove 5 are equal. And the height of the V-groove is equal to 1.5 times the diameter of the fiber grating, and the negative tolerance is 0.5 μm. In this way, the position of the fiber grating can be guaranteed, and the loosening and dislocation ...

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

PropertyMeasurementUnit
Angleaaaaaaaaaa
Login to view more

Abstract

The invention discloses an external-cavity type narrow-linewidth V-groove fiber bragg grating laser. The laser comprises a gain medium. A highly reflective mirror is plated on one end of the gain medium. An anti-reflective coating I is plated on the other end of the gain medium. A fiber bragg grating carrier, opposite to the anti-reflective coating I, is arranged outside the gain medium. V-type grooves are arranged in the upper end face of the fiber bragg grating carrier. One end of a fiber bragg grating is fixed in the V-type grooves and the other end of the fiber bragg grating stretches out of the fiber bragg grating carrier. An anti-reflective coating II is arranged on one end, corresponding to the gain medium, of the fiber bragg grating carrier, and corresponds to the anti-reflective coating I. The laser is advantageous in that (1) by arranging the V grooves, the coupling loss of the fiber bragg grating and the gain medium is low; (2) after the V grooves are provide, the impact resistance of the fiber bragg grating is good and the noise is low; (3) the fiber bragg grating is used as a reflection structure and wavelength choice, so noise is low and linewidth is narrow; and (4) the fiber bragg grating is used as one part of a resonant cavity, a fiber can be coupled to the laser without a lens, so the structure is simple and the loss is low.

Description

technical field [0001] The invention belongs to the technical field of lasers, in particular to an external cavity type narrow line width V-groove fiber grating laser. Background technique [0002] Lasers will have broad application prospects in the fields of communication, military, medical and optical information processing, especially in the field of optical communications. With the development of optical wavelength division multiplexing technology, fiber lasers will be able to meet the needs of communication systems for light sources. Higher requirements. At present, lasers for communication are mainly semiconductor lasers, and the existing problems are: semiconductor lasers have poor monochromaticity and wide linewidth, so narrow linewidth lasers using Bragg gratings have emerged as the times require. Since the narrow linewidth laser of the waveguide Bragg grating has a large coupling loss, the manufacturing cost of the m=0-level Bragg grating is high and difficult to ...

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
IPC IPC(8): H01S3/067
CPCH01S3/06708H01S3/06704
Inventor 刘耀尹小杰张家顺安俊明常夏森
Owner HENAN SHIJIA PHOTONS TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap