DocumentCode :
2731600
Title :
Improvements on Corrugation Pitch Modulated Distributed Coupling Coefficient Distributed Feedback laser structures for single longitudinal mode operation
Author :
Boavida, José ; Fernandes, Carlos ; Morgado, José
Author_Institution :
Inst. de Telecomun., Lisbon, Portugal
fYear :
2009
fDate :
June 28 2009-July 2 2009
Firstpage :
1
Lastpage :
5
Abstract :
Optical communication systems depend heavily on the performance of the light emitter, usually a distributed feedback (DFB) laser. This paper presents optimised corrugation-pitch-modulated (CPM) distributed-coupling-coefficient (DCC) DFB laser structures specially designed for single longitudinal mode operation. The optimisation process is described and divided into two stages: near and above threshold. Near threshold, the purpose is the simultaneous maximisation of the normalised mode selectivity (S) and the minimisation of the electric field flatness (F). Above threshold, the power emission spectrum is assessed, as well as the side mode suppression ratio (SMSR). For the CPM-3DCC-DFB, S ap 2.54 , F ap 0.019 and SMSR ges 48 dB are achieved, which clearly outperforms similar laser structures proposed elsewhere.
Keywords :
distributed feedback lasers; laser modes; laser stability; optical communication equipment; optical modulation; DFB laser; corrugation pitch modulation; distributed coupling coefficient; distributed feedback laser; optimisation; power emission spectrum; side mode suppression ratio; single longitudinal mode operation; Distributed feedback devices; Gratings; Laser feedback; Laser modes; Light emitting diodes; Optical coupling; Optical design; Optical fiber communication; Optical modulation; Telecommunications; corrugation-pitch-modulated; distributed feedback laser; distributed-coupling-coefficient; matrix techniques; power emission spectrum; side mode suppression;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Transparent Optical Networks, 2009. ICTON '09. 11th International Conference on
Conference_Location :
Azores
Print_ISBN :
978-1-4244-4825-8
Electronic_ISBN :
978-1-4244-4827-2
Type :
conf
DOI :
10.1109/ICTON.2009.5185272
Filename :
5185272
Link To Document :
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