Use of a Sm/sup 3+/-doped fiber as a low-coherence light source

Author

Wang, D.N. ; Meggitt, B.T. ; Palmer, A.W. ; Grattan, K.T.V. ; Ning, Y.N.

Author_Institution

Dept. of Electr. Electron. & Inf. Eng., City Univ., London, UK

Volume

7

Issue

6

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

620

Lastpage

622

Abstract

A Sm/sup 3+/-doped fiber pumped by an Ar-ion laser can produce a low coherence, visible light source for white light interferometric use. By the use of two spectral filters, a two wavelength combination source can also be generated flexibly and efficiently. This fiber light source is compatible with other fiber components in the optical sensor system, has good coupling efficiency into single mode fibers and high spatial coherence thus showing significant potential for this family of doped fibers, for use in white light interferometric sensor applications.<>

Keywords

fibre lasers; fibre optic sensors; light coherence; light interferometers; light sources; optical fibre couplers; optical filters; optical pumping; samarium; Ar; Ar-ion laser pump; SiO/sub 2/-GeO/sub 2/:Sm; Sm/sup 3+/-doped fiber; coupling efficiency; fiber light source; high spatial coherence; low-coherence light source; optical sensor system; single mode fibers; spectral filters; two wavelength combination source; visible light source; white light interferometric sensor applications; white light interferometric use; Fiber lasers; Laser excitation; Light sources; Optical coupling; Optical fiber filters; Optical fiber sensors; Optical interferometry; Optical sensors; Pump lasers; Spatial coherence;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.388743

Filename

388743