Specifications
Number of references: 11
Main heading: Damage detection
Controlled terms: Information systems - Partial discharges - Risk assessment
Uncontrolled terms: Asset identification - Asset valuation - Complex information
- Evaluation results - Modular division - System risk assessment - Threat assessment
- Vulnerability assessments
Classification code: 421 Strength of Building Materials; Mechanical Properties - 422
Strength of Building Materials; Test Equipment and Methods - 701.1 Electricity: Basic
Concepts and Phenomena - 903.2 Information Dissemination - 922.1 Probability Theory
DOI: 10.4156/ijact.vol5.issue1.40
Database: Compendex
Compilation and indexing terms, © 2013 Elsevier Inc.
12.
Accession number: 20130415940886
Title: Polarization control in the coherent optical detection system
Authors: Li, Tie1 ; Ke, Xizheng2 ; Chen, Juan2 ; Ning, Weigang2/李铁;柯熙政;谌娟;宁伟刚
Author affiliation:
1 Science and Technology on Electormechanical Dynamic Control Laboratory, Xi'an 710065,
China
2 The Faculty of Automation and Information Engineering, Xi'an University of Technology,
Xi'an 710048, China
Corresponding author: Li, T. (litielee@yahoo.com)
Source title: Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title: Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume: 41
Issue: 11
Issue date: November 2012
Publication year: 2012
Pages: 3069-3074
Language: Chinese
ISSN: 10072276
Document type: Journal article (JA)
Publisher: Chinese Society of Astronautics, P.O. Box 225-32, Tianjin, 300192, China
Abstract: Coherent detection can increase receiver sensitivity, improve system performance
in optical communication system. However, due to atmospheric effects, the polarization state of
the signal light will be random variation after transmission through the atmosphere, it is difficult
to achieve same light polarization of the two beams directly which affects the detection
efficiency of the system. A new polarization control method was presented for coherent optical
detection system. Based on this structure, a mathematical model was built about the polarization
control of coherent optical detection system. The extruded fiber polarization controller was
selected as polarization control devices in this program. The simulated annealing algorithm was
taken as the system control algorithm and the improved algorithem was used to achieve
automatic polarization control. The whole control process used blind search, with no specific
parameter changes. Simulation results show that the method is suitable for coherent optical