Patent ID: 9548589
Date: 2017-01-17
CPC Classifications: G02B,G02F,H01S

Claim:
1. An optical transmitter, comprising: an interference region configured to confine resonant light between a first reflector region and a second reflector region along a first direction, the interference region having an upper plane and a bottom plane, wherein a normal direction to said upper plane and to said bottom plane is along a second direction that is substantially perpendicular to the first direction; a first electrode and a second electrode electrically coupled to the interference region, the first electrode and the second electrode configured to generate light in the interference region through an electrical carrier injection by an electrical field applied between the first electrode and the second electrode along a third direction that is substantially perpendicular to the first direction and the second direction; a third electrode electrically coupled to the interference region, the third electrode being configured to modulate an electrical carrier concentration in the interference region by an electrical field applied between the first electrode and the third electrode or between the second electrode and the third electrode; and a grating region formed on the upper plane of the interference region and configured to emit at least a portion of the resonant light out of the interference region along the second direction through an opposite side of the grating region on the bottom plane; wherein a dielectric layer is formed between the third electrode and the interference region and the third electrode is configured to modulate the electrical carrier recombined in the interference region through a capacitive effect, and wherein the electrical carrier infection along the third direction is perpendicular to the light resonance direction along the first direction.