Title :
Effect of nonlinear gain on modulation dynamics in quantum-well lasers
Author :
Arakawa, Yasuhiko ; Takahashi, Tatsuro
Author_Institution :
Res. Center for Adv. Sci. & Technol., Tokyo Univ., Japan
Abstract :
The nonlinear gain of quantum-well lasers is discussed theoretically. The results indicate that the nonlinear gain is enhanced by the quantum confinement of carriers. In addition, it is found that this nonlinear gain significantly reduces the differential gain, which results in degradation of modulation dynamics of lasers under a high photon density condition.
Keywords :
nonlinear optics; optical modulation; semiconductor junction lasers; degradation of modulation dynamics; differential gain; high photon density condition; modulation dynamics; nonlinear gain; quantum confinement of carriers; quantum-well lasers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19890122
