Laser comb generator
OwnerMohamad Haidar Shahineinventor
Life of this patent
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Abstract
An optical comb generator for generating multiple optical wavelengths from a single source simultaneously for many optical channels on a semiconductor substrate. The comb generator provides narrow channel spacing using chirped Bragg grating with uniformly spaced grating pitches but with tapered waveguide to facilitate the fabrication process and generate laser comb channels with uniform line widths across all channels. The laser comb generator facilitates monolithic integration of many photonic integrated circuit elements.
Claims16
A laser comb generator for generating multiple optical wavelengths from a single source, the laser comb generator comprises:
- at least two chirped Bragg grating providing narrow channel spacing with uniformly spaced grating pitches a tapered waveguide to facilitate the fabrication process and for generating laser comb channels with uniform line widths across all channels;
- a set of optical gain chip to increase the signal power transmitted from at least two chirped Bragg grating;
- a set of phase element to change the phase of the signal transmitted from the set of optical gain chip;
- a multimode interference coupler to combine the output transmitted from the set of phase element;
- a phase adjustment element to control and align the optical comb wavelengths from the multimode interference coupler;
- an optical amplifier to amplify the optical comb wavelengths with sufficient power from the phase adjustment element;
- an optical splitter positioned to separate individual frequencies of an output from the optical amplifier to provide a plurality of output from the laser comb device to facilitate monolithic integration.
A method of using laser comb generator for generating multiple optical wavelengths from a single source comprises:
- generating laser comb channels with uniform line widths across all channels and facilitating fabrication using at least two chirped Bragg grating providing narrow channel spacing with uniformly spaced grating pitches a tapered waveguide;
- transmitting signal from at least two chirped Bragg grating to a set of optical gain chip;
- transmitting signal from the set of optical gain chips to a set of phase element;
- combining the output from the set of phase element by a multimode interference coupler;
- controlling and aligning the optical comb wavelengths from the multimode interference coupler by a phase adjustment element;
- amplifying the optical comb wavelengths with sufficient power by an optical amplifier from the phase adjustment element;
- and
- separating individual frequencies of an output from the optical amplifier by an optical splitter positioned to provide a plurality of output from the laser comb device to facilitate monolithic integration.
Dependencies are inferred from the claim text.