Laser Doppler Velocimetry with Small Wavelength Sensitivity Using Planar Lightwave Circuit

被引：0

作者：

Maru, Koichi ^{[1
]}

Fujii, Yusaku ^{[2
]}

机构：

[1] Kagawa Univ, Dept Reliabil Based Informat Syst Engn, Takamatsu, Kagawa 7610396, Japan

[2] Gunma Univ, Dept Elect Engn, Kiryu, Gunma 3768515, Japan

来源：

ADVANCES IN PRECISION INSTRUMENTATION AND MEASUREMENT | 2012年 / 103卷

关键词：

Laser Doppler velocimeter; arrayed waveguide grating; Mach-Zehnder interferometer; wavelength sensitivity; WAVE-GUIDES; MULTI DEMULTIPLEXER; SILICON;

D O I：

10.4028/www.scientific.net/AMM.103.76

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

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.

引用

页码：76 / +

页数：3

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