Title :
Influence of asymmetric nonlinear gain on the transient intensities of longitudinal modes in long wavelength Fabry-Perot laser diodes
Author :
Ogita, Shouichi ; Lowery, Arthur J. ; Tucker, Rodney S.
Author_Institution :
Opt. Semicond. Devices Lab., Fujitsu Labs. Ltd., Atsugi, Japan
fDate :
2/1/1997 12:00:00 AM
Abstract :
The intensity transients of the longitudinal modes in a modulated 1.3-μm Fabry-Perot laser diode are analyzed theoretically and experimentally. A simulation of the transient spectra, based on a 21-mode rate-equation model, shows that nonlinear gain strongly affects the intensities of longitudinal modes during transients. The simulation results are confirmed by time-resolved spectrum measurements. From a comparison of measurements and the simulations, the self- and cross-saturation coefficients are estimated. Our simulations also show that the transient spectrum strongly depends on the bit interval during digital modulation
Keywords :
electro-optical modulation; high-speed optical techniques; infrared sources; laser modes; laser theory; laser transitions; laser variables measurement; optical saturation; semiconductor device models; semiconductor lasers; simulation; time resolved spectroscopy; transients; μm Fabry-Perot laser diode; 1.3 mum; 21-mode rate-equation model; asymmetric nonlinear gain; bit interval; cross-saturation coefficients; digital modulation; long wavelength Fabry-Perot laser diodes; longitudinal mode intensity; longitudinal modes; nonlinear gain; self-saturation coefficients; simulation; time-resolved spectrum measurements; transient intensities; transient spectra; transient spectrum; transients; Diode lasers; Laboratories; Laser modes; Laser noise; Laser theory; Nonlinear optics; Optical modulation; Semiconductor lasers; Transient analysis; Wavelength measurement;
Journal_Title :
Quantum Electronics, IEEE Journal of
