A Raman laser intensity sensor induced by the cooperative Rayleigh scattering in a ring configuration

• Type: Article in International Scientific Journal
• Date: 2011

Authors

baptista, jm (Author) Other; correia, c (Author) Other; marques, mb (Author) FCUP; frazao, o (Author) Other

Journal

Title: Laser Physics

Vol. 21

Pages: 928-930

ISSN: 1054-660X

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 4 Citations

Scopus - 3 Citations

Other information

Authenticus ID: P-002-RT5

DOI: 10.1134/s1054660x11090015

Abstract (EN): In this work, a laser sensor is described that uses the multipath interference produced inside a ring cavity to measure the power loss induced by a moving taper intensity sensor. The laser is created due to the virtual distributed mirror formed by the Rayleigh scattering produced in a dispersion compensating fiber when pumped by a Raman laser. Two laser peaks were formed, one of them is obtained by the Raman gain (1555 nm) inside the ring and the second is created by the combination of the Raman gain and the Rayleigh scattering (1565 nm). A taper sensor is used as displacement sensor and when the losses is applied in the taper the second laser peak is reduced and the first peak is maintained constant and can be used as reference level.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 3