Real-time vibration measurement using a feedback type of laser diode interferometer with an optical fiber

被引：24

作者：

Suzuki, T ^{[1
]}

Okada, T ^{[1
]}

Sasaki, O ^{[1
]}

Maruyama, T ^{[1
]}

机构：

[1] NIIGATA UNIV,FAC ENGN,NIIGATA 95021,JAPAN

来源：

OPTICAL ENGINEERING | 1997年 / 36卷 / 09期

关键词：

interferometer; laser diode; optical fiber; feedback control; vibration measurement;

D O I：

10.1117/1.601475

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A laser diode interferometer that uses an optical fiber is proposed. The laser diode simultaneously functions as a light source, a phase modulator, and a phase compensator. Detection of the vibration and reduction of external disturbance are carried out using a feedback control for the injection current of the laser diode. Thus it can measure vibration accurately in real time with a simple signal processing circuit. The optical fiber not only functions as a flexible probe, enabling us to measure the vibration of an object that cannot be moved onto the optical bench, it also acts as a reference mirror, thereby simplifying the unit construction. The principle of the feedback control in laser diode interferometer is also described in detail. (C) 1997 society of Photo-Optical Instrumentation Engineers.

引用

页码：2496 / 2502

页数：7

共 10 条

[1] Active phase-shifting interferometer using current modulation of a laser diode [J].