Title :
Ultra-long raman laser with a feedback based on the Rayleigh scattering
Author :
Babin, S.A. ; El-Taher, Atalla E. ; Harper, P. ; Churkin, Dmitry V. ; Kablukov, S.I. ; Podivilov, E.V. ; Turitsyn, S.K.
Author_Institution :
Inst. of Autom. & Electrometry, SB RAS, Novosibirsk, Russia
Abstract :
This paper reports the Rayleigh scattering effects in ultra-long Raman fibre laser. It has been found that in a long fibre cavity (-100 km) the distributed feedback due to Rayleigh back scattering at propagation of light between fibre Bragg grating reflectors may be comparable with the lumped feedback provided by the FBG itself. As a result, Raman lasing in the fibre span limited by lumped (FBG) reflector at one side only appears possible due to significant reflection from the RS-based "random" distributed mirror at the other side. Thus, it concludes that a distributed Rayleigh scattering "random" mirror can form a cavity together with a single FBG spliced to the opposite cavity end..
Keywords :
Bragg gratings; Raman lasers; Rayleigh scattering; distributed Bragg reflector lasers; distributed feedback lasers; fibre lasers; high-speed optical techniques; laser beams; laser cavity resonators; laser feedback; laser mirrors; RS-based random distributed mirror; Raman lasing; Rayleigh back scattering effect; distributed feedback; fibre Bragg grating reflector; long fibre cavity; lumped feedback; ultra-long Raman fibre laser; Bragg gratings; Distributed feedback devices; Fiber gratings; Fiber lasers; Laser feedback; Light scattering; Mirrors; Optical propagation; Raman scattering; Rayleigh scattering;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5194622
