Characterization method and device of tunable laser

A technology for tuning lasers and lasers, applied in the field of optical communication, can solve problems such as inapplicability of tunable lasers, and achieve the effects of good single-mode performance, simple data processing, and good single-mode performance.

Active Publication Date: 2016-08-03
宁波元芯光电子科技有限公司
View PDF9 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to propose a new characterization method and device for tunable lasers, which overcomes that the existing ch...

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
  • Characterization method and device of tunable laser
  • Characterization method and device of tunable laser
  • Characterization method and device of tunable laser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] In the first embodiment of the present invention, as attached figure 2 As shown, a characterization method for tunable lasers is provided. The specific execution process of this method is as follows:

[0043] Step 201: Setting tunable laser parameters, filter center wavelength and control signal range.

[0044] Specifically, the current in the active region of the laser is fixed; the output light of the laser is coupled into the optical fiber, and then divided into two paths through the beam splitter, passing through the optical band-pass filter and the optical band-stop filter respectively, and the optical band-pass filter The center wavelength of the pass filter and optical band-stop filter is set at the target wavelength λ 0 place; set the range of the control signal.

[0045] Step 202: Generate a control signal combination, calculate a criterion value, and maximize the criterion through an optimization algorithm.

[0046] Specifically, according to the set rang...

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

The invention relates to a characterization method and device of a tunable laser, which are used for realizing rapid and accurate characterization of the tunable laser, have universality, and are suitable for a tunable laser having an arbitrary number of control signals. The method includes the following steps: output light of the tunable laser is coupled into an optical fiber, and is then split into two paths through a beam splitter, one path passes through an optical band-pass optical filter, the other path passes through an optical band rejection filter, and central wavelengths of the optical band-pass filter and the optical band rejection filter are set at a target wavelength [lambda]0, and are then connected to a detector; control signals of the tunable laser are changed and optical power detected by the detector is collected through a computer or a microprocessor; and an initial control signal combination is generated randomly, a ratio R of the optical power P1 that passes through the optical band-pass filter and the optical power P2 that passes through the optical band rejection filter is used as a criterion for optimization, and a control signal combination required by stable output of the target wavelength [lambda]0 is searched through an optimization algorithm.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a characterization method and device for a tunable laser. Background technique [0002] With the rapid development of optical communication technology, tunable lasers have received extensive attention and research. In dense wavelength division multiplexing systems and next-generation reconfigurable optical networks, tunable lasers are regarded as one of the indispensable key devices. In recent decades, researchers have proposed many different tuning schemes for tunable lasers. Among them, commercially available monolithic integrated tunable lasers mainly include distributed feedback (Distributed Feedback, DFB) laser arrays, distributed reflection (Distributed Bragg Reflector, DBR) and tunable lasers with similar structures. The DFB laser achieves wavelength tuning by changing the Bragg wavelength of the grating through temperature control. For example, the tempera...

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): H01S5/00H01S5/06H01S5/12
CPCH01S5/0085H01S5/06H01S5/12
Inventor 国伟华陈泉安陆巧银
Owner 宁波元芯光电子科技有限公司
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