Title :
High-resolution measurement of stimulated Brillouin scattering spectra in single-mode fibres
Author :
Loayssa, A. ; Benito, D. ; Garde, M.J.
Author_Institution :
Departamento de Ingenieria Electrica y Electronica, Univ. Publica de Navarra, Pamplona, Spain
fDate :
6/1/2001 12:00:00 AM
Abstract :
A new technique is introduced for stimulated Brillouin scattering spectral characterisation. It provides accurate measurements of the amplitude and phase of the Brillouin gain and loss spectra with high frequency resolution and stability. Furthermore, only narrow-electrical-bandwidth electro-optical components and instruments are needed in its experimental implementation. The measurement principle is based on translating the Brillouin spectral information from the optical to the electrical domain. This leads to frequency resolutions of the measurements in the kilohertz range because the Brillouin spectra are scanned by sweeping an electrical rather than optical carrier. The experimental setup relies on a Brillouin-erbium fibre laser to generate the optical signals needed to perform measurements, so that problems related to optical frequency drift are avoided. Measurements of Brillouin gain and loss spectra in a 25 km reel of standard single-mode fibre are presented demonstrating the capabilities of the technique
Keywords :
optical fibre losses; optical fibre testing; stimulated Brillouin scattering; 25 km; 25 km reel; Brillouin gain spectra; Brillouin loss spectra; Brillouin spectral information; Brillouin-erbium fibre laser; accurate measurements; amplitude; electrical carrier; electrical domain; frequency resolutions; high frequency resolution; high-resolution measurement; kilohertz range; measurement principle; narrow-electrical-bandwidth electro-optical components; optical domain; optical frequency drift; optical signals; phase; single-mode fibres; spectral characterisation; stability; standard single-mode fibre; stimulated Brillouin scattering spectra;
Journal_Title :
Optoelectronics, IEE Proceedings -
DOI :
10.1049/ip-opt:20010521