Semiconductor Optical Integrated Device
AssigneeNTT, Inc.
InventorsWataru Kobayashi, Meishin Chin
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Abstract
A semiconductor optical integrated device includes a semiconductor laser, an optical modulator that modulates light emitted from the semiconductor laser to generate signal light, an optical waveguide that propagates the signal light, a gain waveguide formed adjacent to the optical waveguide, and a light receiving unit connected to the gain waveguide, which are monolithically integrated. A gain of the gain waveguide is varied by part of the signal light from the optical waveguide, and the light receiving unit acquires an intensity of natural radiation amplified light propagating through the gain waveguide.
Claims7
A semiconductor optical integrated device comprising:
- a semiconductor laser;
- an optical modulator configured to modulate light emitted from the semiconductor laser to generate signal light;
- an optical waveguide configured to propagate the signal light;
- a gain waveguide formed adjacent to the optical waveguide;
- and
- a light receiving unit connected to the gain waveguide, which are monolithically integrated, wherein
- a gain of the gain waveguide is varied by part of the signal light from the optical waveguide, and
- the light receiving unit acquires an intensity of natural radiation amplified light propagating through the gain waveguide.
Dependencies are inferred from the claim text.