Title :
FM efficiency and spectral linewidth in two-active-section MQW DBR laser
Author :
Kunii, T. ; Matsui, Y. ; Horikawa, H. ; Ogawa, Y. ; Kamijoh, T.
Author_Institution :
Oki Electr. Ind. Co. Ltd., Tokyo, Japan
fDate :
5/7/1992 12:00:00 AM
Abstract :
A large and red-shifted FM response and a spectral linewidth of a few megahertz were obtained in a two-active-section MQW DBR laser. It is found that the FM efficiency can be enhanced by using the inhomogeneity in alpha parameters with a high threshold current density device and that there is a tradeoff in the relationship between spectral linewidth and FM efficiency.
Keywords :
distributed Bragg reflector lasers; optical modulation; semiconductor junction lasers; semiconductor quantum wells; FM efficiency; alpha parameters; current density; inhomogeneity; red-shifted FM response; spectral linewidth; two-active-section MQW DBR laser;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19920611
