Laser Doppler Velocimetry with Small Wavelength Sensitivity Using Planar Lightwave Circuit

摘要：

Using a semiconductor laser as a lightsource of a laser Doppler velocimeter (LDV) is desirable to reduce the size and the cost of velocity measurement equipment. However, typical inexpensive semiconductor lasers suffer from the problem of instability in lasing wavelength. In this paper, LDVs with small wavelength sensitivity are reviewed. The wavelength sensitivity can be reduced by using arrayed waveguide gratings (AWGs), Mach-Zehnder interferometers (MZIs) or cascaded MZIs. These structures can be formed by planar lightwave circuit (PLC) technology. The principles and the possibility for realizing wavelength-insensitive operation are discussed.

关键词： Laser Doppler velocimeter arrayed waveguide grating Mach-Zehnder interferometer wavelength sensitivity

作者: Koichi Maru Yusaku Fujii

作者单位: Department of Reliability-based Information Systems Engineering, Kagawa University,Takamatsu,Kagawa Department of Electronic Engineering, Gunma University, Kiryu, Gunma 376-8515, Japan

会议类型: 国际会议

会议名称: The 3th International Conference on Precision Instrumentation and Measurement 2011(CPIM2011)(第三届精密仪器与测量国际学术会议)

会议地点: 湘潭

会议语种:英文

页码: 76-81

在线出版日期: 2011-07-19（万方平台首次上网日期，不代表论文的发表时间）