SYNTHESIZED SOURCE FOR WHITE-LIGHT SENSING SYSTEMS

被引：73

作者：

RAO, YJ

NING, YN

JACKSON, DA

机构：

[1] Applied Optics Group, Physics Laboratory, University of Kent at Canterbury, Kent

来源：

OPTICS LETTERS | 1993年 / 18卷 / 06期

关键词：

D O I：

10.1364/OL.18.000462

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report a novel technique in which by combining the output from two multimode laser diodes a synthesized source with an extremely short coherence length is produced for use in white-light interferometric sensing systems. Experimentally and theoretically it is demonstrated that, by summing the autocorrelation function of two multimode laser diodes with a wavelength difference of 108 nm, a synthesized source with an equivalent coherence length of approximately 4 mum is generated, greatly reducing the signal-to-noise ratio required to identify the central fringe position.

引用

页码：462 / 464

页数：3

共 6 条

[1]

BOHM R, 1990, 7TH P OPT FIB SENS C, P353

[2]

CHEN S, 1992, 8TH P OPT FIB SENS C

[3] COHERENCE TUNED FIBER OPTIC SENSING SYSTEM, WITH SELF-INITIALIZATION, BASED ON A MULTIMODE LASER DIODE [J].

GERGES, AS ;

NEWSON, TP ;

JACKSON, DA .

APPLIED OPTICS, 1990, 29 (30) :4473-4480

[4]

LEFEVRE HC, 1990, 7TH P OPT FIBR SENS, P345

[5] COHERENCE SENSING OF TIME-ADDRESSED OPTICAL-FIBER SENSORS ILLUMINATED BY A MULTIMODE LASER DIODE [J].

SANTOS, JL ;

JACKSON, DA .

APPLIED OPTICS, 1991, 30 (34) :5068-5076

[6]

TROUCHET D, 1989, 6TH P OFS C PAR, P227

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