| 摘要 |
The present invention relates to a lasing device for use in an optical module. The lasing device comprises a first reflector (1300) and a second reflector (1100); a confinement layer (1020) adapted to confine current within a current-confining aperture; and an active layer (1220) between the first and second reflectors. The active layer comprises a main active region (1400) aligned with the current confining aperture and an auxiliary active region (1500) surrounding the main active region (1400). The second reflector (1100) includes a first reflector region (1140) arranged on the current-confining aperture (1021) and a second reflector region (1130) surrounding the first reflector region (1140). The second reflector region and the first reflector are configured to induce stimulated recombination in the auxiliary active region, the second reflector region (1130) has a higher reflectivity than the first reflector region (1140) to reduce the number of the excess carriers at the periphery of the main active region thereby increasing the modulation bandwidth. |
