Title :
Generation of widely tunable picosecond pulses with large SMSR by externally injecting a gain-switched dual laser source
Author :
Clarke, A.M. ; Anandarajah, P.M. ; Barry, L.P.
Author_Institution :
Sch. of Electron. Eng., Dublin City Univ., Ireland
Abstract :
The authors demonstrate a procedure of generating picosecond optical pulses that are tunable over a wide wavelength range (65 nm) and have very high spectral purity side-mode suppression ratio [(SMSR)>60 dB]. The large tuning range is obtained by employing external injection into a gain-switched source containing two Fabry-Pe´rot lasers. The use of a widely tunable Bragg grating at the output improves the SMSR such that it exceeds 60 dB over the entire tuning range.
Keywords :
Bragg gratings; Q-switching; laser tuning; optical communication equipment; optical pulse generation; semiconductor lasers; Bragg grating; Fabry-Perot lasers; SMSR; gain-switched dual laser source external injection; side-mode suppression ratio; widely tunable picosecond pulse generation; Fiber lasers; Frequency; Laser tuning; Optical fiber communication; Optical pulse generation; Optical pulses; Optical tuning; Semiconductor lasers; Tunable circuits and devices; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.834523
