Title :
Wavelength-selectable injection-locking scheme for multiwavelength 10-GHz optical pulse generation
Author :
Fok, M.P. ; Lee, K.L. ; Shu, C.
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, China
Abstract :
We have developed a scheme to generate multiwavelength short pulses by injection-locking of a Fabry-Pe´rot laser diode with spectrally broadened and comb-filtered distributed feedback (DFB) laser pulses. Tunable five-wavelength 10-GHz pulses have been successfully generated from our scheme. The number of output wavelengths is adjustable by controlling the spectral width of the DFB injection input through the amount of self-phase modulation in a dispersion-shifted fiber. The generation scheme also benefits from its tolerance to wavelength drift of the injection source. A 10-GHz eye measurement has been performed and an output extinction ratio of 15.6 dB is obtained.
Keywords :
comb filters; laser tuning; optical fibre dispersion; optical pulse generation; self-phase modulation; semiconductor lasers; spectral line broadening; 10 GHz; Fabry-Perot laser; comb-filtered laser pulses; dispersion-shifted fiber; distributed feedback laser pulses; extinction ratio; eye measurement; five-wavelength pulses; injection-locking; laser diode; multiwavelength pulse generation; optical pulse generation; self-phase modulation; spectral broadening; spectral width; tunable pulses; wavelength drift; wavelength-selectable scheme; Diode lasers; Distributed feedback devices; Fiber nonlinear optics; Nonlinear optics; Optical fiber polarization; Optical filters; Optical modulation; Optical pulse generation; Optical pulses; Pulse amplifiers; Birefringence loop mirror filter (LMF); injection-locking; multiwavelength pulse generation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.853032
