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

Method for tuning laser output wavelength based on self-mixing effect

A tuning laser and self-mixing technology, which is applied in the direction of devices, optics, instruments, etc. that control the output parameters of lasers, to achieve the effects of high repeatability accuracy, simple external modification, and reduced system modification costs

Inactive Publication Date: 2010-11-03
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the tuning interval is 0.8nm, but the tuning speed generally requires a few seconds of tuning time

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
  • Method for tuning laser output wavelength based on self-mixing effect
  • Method for tuning laser output wavelength based on self-mixing effect
  • Method for tuning laser output wavelength based on self-mixing effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Such as figure 1 As shown, the device of the present invention is composed of a laser 1 , a beam splitter 2 , a variable attenuation plate 3 , a mirror 4 , a spectrometer 5 , a detector 6 , and an optical power meter 7 . The detector 6 generally adopts a photodiode or a photomultiplier tube detector.

[0034] The concrete implementation of the inventive method is as follows: as figure 1 As shown, laser 1 adopts a continuous semiconductor laser with an output wavelength of 1060nm. Because it is in the invisible band, a visible light can be introduced during the experiment as an auxiliary optical path, which is convenient for subsequent optical path adjustment; beam splitter 2 is a 45° beam splitter. When the feedback light intensity can meet the needs of the experiment, increase the transmission ratio of the beam splitter as much as possible to make the output light power as large as possible. Through the analysis of experimental data, the transmission ratio of the beam...

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
angle of incidenceaaaaaaaaaa
reflectanceaaaaaaaaaa
Login to View More

Abstract

A method for tuning laser output wavelength based on self-mixing effect belongs to the field of opto-electrical engineering. The tuning method comprises the following steps of: feeding laser output light back to a laser by an external reflecting mirror; realizing the tuning of the laser output wavelength by changing feedback light intensity by making use of semiconductor laser self-mixing effect.Ways for controlling backward feedback light intensity are as follows: inserting a linear polarizer, an attenuation film and a variable diaphragm between the laser and the reflecting mirror, or adjusting the pitching of the reflecting mirror. The invention provides a new method for tuning laser output wavelength, which can effectively avoid larger power change due to wavelength tuning, thus realizing the purpose of keeping the output light power to be relatively stable during the wavelength tuning. In addition, the method can be applied to conducting external modification to the laser with fixed wavelength, thus causing the wavelength to be adjustable, being simple and easy, and greatly reducing the cost for system modification.

Description

technical field [0001] The invention relates to a method for tuning the output wavelength of a laser, in particular to a method for tuning the output wavelength of a semiconductor laser. technical background [0002] With the expansion of the transmission capacity of the optical communication network, the demand for the number of wavelengths is increasing, and the traditional light source used in the optical communication network is a fixed-wavelength laser, so it is necessary to match multiple fixed-wavelength lasers for each wavelength channel. It leads to rising costs, complicated management and an increase in the number of equipment. Tunable wavelength lasers not only solve many problems faced by system design, greatly improve the efficiency of optical networks, but also reduce production and management costs. Therefore, tuning the laser output wavelength is a very important topic. [0003] Semiconductor lasers generally use various Fabry-Perot resonators, and cavity l...

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): H01S5/06G02F1/35
Inventor 李斌成曲哲超刘显明韩艳玲
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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