Title :
Relative intensity noise and linewidth measurements of a widely tunable GCSR laser
Author :
Saavedra, A.A. ; Rigole, P.-J. ; Goobar, E. ; Schatz, R. ; Nilsson, S.
Author_Institution :
Center for Telecommun. Studies, Univ. Catolica do Rio de Janeiro, Brazil
fDate :
4/1/1998 12:00:00 AM
Abstract :
The intensity and frequency noise of a grating assisted codirectional coupler with rear sampled grating reflector laser with 40-nm tuning range and 35-dB sidemode suppression ratio (SMSR) have been measured. The linewidth varies from 430 kHz to 4 MHz as a function of tuning. The resonance frequency, intrinsic bandwidth and damping factor for this device were extracted from the relative intensity noise (RIN) measurements. At high bias, the RIN is -150 dB/Hz and the maximum resonance frequency is 4.5 GHz.
Keywords :
diffraction gratings; distributed Bragg reflector lasers; laser modes; laser noise; laser tuning; optical directional couplers; semiconductor lasers; 430 kHz to 4 MHz; damping factor; grating assisted codirectional coupler; high bias; intrinsic bandwidth; laser tuning; linewidth; linewidth measurements; maximum resonance frequency; relative intensity noise; resonance frequency; sampled grating reflector laser; sidemode suppression ratio; tuning range; widely tunable GCSR laser; Bandwidth; Frequency measurement; Gratings; Laser noise; Laser tuning; Noise measurement; Optical coupling; Resonance; Resonant frequency; Signal to noise ratio;
Journal_Title :
Photonics Technology Letters, IEEE
