Title :
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
fDate :
6/1/1995 12:00:00 AM
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;
Journal_Title :
Photonics Technology Letters, IEEE
