A curve fitting signal processing scheme for a white-light interferometric system with a synthetic source

被引：10

作者：

Wang, Q ^{[1
]}

Ning, YN ^{[1
]}

Grattan, KTV ^{[1
]}

Palmer, AW ^{[1
]}

机构：

[1] City Univ London, Dept Elect Elect & Informat Engn, London EC1V 0HB, England

来源：

OPTICS AND LASER TECHNOLOGY | 1997年 / 29卷 / 07期

关键词：

signal processing; curve fitting; interferometry;

D O I：

10.1016/S0030-3992(97)00043-1

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A white-light interferometric system, which comprises two Michelson interferometers linked by a 100 mu m diameter core multimode step index fibre has been investigated, where a signal processing scheme, using curve fitting, has been introduced to suppress the noise induced in the system. The theoretical resolution of such a sensor with the use of an appropriate curve fitting signal processing scheme has been discussed. The experimental results obtained show the short term repeatability (to three standard deviations) to be better than 5 nm after signal processing, under conditions where the fibre is constantly vibrated in a known and reproducible way. (C) 1998 Published by Elsevier Science Ltd, All rights reserved.

引用

页码：371 / 376

页数：6

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