Title :
Tunable Two-Color Lasing Emission Based on Fabry-Pérot Laser Diode Combined With External Cavity Feedback
Author :
Jian Wei Wu ; Nakarmi, Bikash ; Tran Quoc Hoai ; Yong Hyub Won
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea
Abstract :
In this paper, two-color lasing emission is experimentally demonstrated by employing a multimode Fabry-Pérot laser diode (MMFP-LD) associated with external cavity of two tunable filters and an erbium-doped fiber amplification (EDFA), whose difference frequency is quasi-continuously tunable from several hundred GHz to more than 2 THz. The obtained side-mode suppression ratio (SMSR) in the output spectrum is around ~20 dB, and the modulation depth of simulated beat signal converted by two emission modes rapidly decayed as increasing the frequency separation. In addition, optical behaviors induced by mode competition and four-wave mixing are observed and discussed, while the difference frequency was shortened to GHz regime.
Keywords :
Fabry-Perot resonators; erbium; laser cavity resonators; laser feedback; laser modes; laser tuning; multiwave mixing; optical fibre amplifiers; optical filters; optical frequency conversion; optical modulation; semiconductor lasers; MMFP-LD; SMSR; difference frequency; erbium-doped fiber amplification; external cavity feedback; four-wave mixing; frequency separation; laser tuning; mode competition; modulation depth; multimode Fabry-Perot laser diode; side-mode suppression ratio; simulated beat signal; tunable filters; two-color lasing emission; Laser feedback; Laser mode locking; Optical feedback; Optical fibers; Optical filters; Fabry-Pérot laser diode (FP-LD); external cavity; mode competition and four-wave mixing; two-color lasing emission;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2013.2241418
