Ring resonator based narrow-linewidth semiconductor lasers
AssigneeCalifornia Institute of Technology
InventorAlexander Ksendzov
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Abstract
The present invention is a method and apparatus for using ring resonators to produce narrow linewidth hybrid semiconductor lasers. According to one embodiment of the present invention, the narrow linewidths are produced by combining the semiconductor gain chip with a narrow pass band external feedback element. The semi conductor laser is produced using a ring resonator which, combined with a Bragg grating, acts as the external feedback element. According to another embodiment of the present invention, the proposed integrated optics ring resonator is based on plasma enhanced chemical vapor deposition (PECVD) SiO2/SiON/SiO2 waveguide technology.
Claims14
A method for creating a narrow linewidth hybrid semiconductor laser comprising:
- coupling a semiconductor gain chip to a single external feedback element, said external feedback element comprising a ring resonator and a Bragg grating in a single element.
A narrow linewidth hybrid semiconductor laser apparatus comprising:
- semiconductor gain chip coupled to a single external feedback element, said external feedback element comprising a ring resonator and a Bragg grating in a single element.
A method for creating a narrow linewidth hybrid semiconductor laser comprising:
- coupling a semiconductor gain chip to a single external feedback element, said external feedback element comprising a ring resonator and a Bragg grating;
- and
- coupling said external feedback element to a waveguide, wherein said waveguide is made of silicon-oxide and silicon-oxinitride.
A narrow linewidth hybrid semiconductor laser apparatus comprising:
- semiconductor gain chip coupled to a single external feedback element, said external feedback element comprising a ring resonator and a Bragg grating;
- and
- coupling said external feedback element to a waveguide, wherein said waveguide is made of silicon-oxide and silicon-oxinitride.
Dependencies are inferred from the claim text.