Abstract
Long wavelength GaInAsP/InP dynamic-single-mode (DSM) lasers with distributed reflector integrated by bundle-integrated-guide (BIG) structure are reviewed from the points of their fabrication process and operation performances.
The optical coupling efficiency in the BIG structure as well as lasing properties of the BIGD-DBR lasers are discussed from aspects of a low threshold current, a high side-mode-suppression ratio, narrow line-width, and stable single-mode operations under high-speed direct modulation.