Title :
A new design approach for fiber DFB lasers with improved efficiency
Author :
Yelen, Kuthan ; Hickey, Louise M B ; Zervas, Mikhail N.
Author_Institution :
Optoelectronics Res. Centre, Univ. of Southmapton, Southampton, UK
fDate :
6/1/2004 12:00:00 AM
Abstract :
The standard distributed feedback (DFB) laser optimization method is critically investigated and a new design approach based on the effective cavity length is presented. By applying this method in an erbium-ytterbium co-doped fiber, the pump-to-signal conversion ratio is increased by 40% for the same total device length and pumping conditions. The laser with the proposed design is produced and the theoretical results are verified by the experimental work.
Keywords :
distributed feedback lasers; erbium; fibre lasers; laser cavity resonators; optical pumping; optimisation; ytterbium; distributed feedback fiber lasers; effective cavity length; erbium-ytterbium codoped fiber; fiber DFB lasers; pump-to-signal conversion; standard distributed feedback laser optimization method; Distributed feedback devices; Erbium-doped fiber lasers; Fiber lasers; Gratings; Laser feedback; Laser theory; Optical design; Optical feedback; Optical fiber polarization; Pump lasers; DFB; Distributed feedback; erbium; gratings; lasers; optical fiber lasers; ytterbium;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2004.828257
