Apparatus and method for optical comb generation
AssigneeHoneywell International Inc.
InventorsMatthew Wade Puckett, Chad Hoyt, Jianfeng Wu, Wei Charles Jiang, Karl D. Nelson, Jad Salman
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Abstract
Apparatuses and methods are provided for generating an optical frequency comb with a standing wave optical resonator including a Bragg grating. The Bragg grating shifts alternatively higher and lower wavelengths of resonances in a stop bandwidth of the Bragg grating. A resonance in the stop bandwidth whose wavelength is shifted higher can be used to compensate for shifting of the wavelength lower due to the Kerr effect.
Claims20
A standing wave optical resonator configured to generate an optical frequency comb, the standing wave optical resonator comprising:
- a first mirror (FM) comprising a first FM port configured to transmit a portion of the optical frequency comb, and a second FM port;
- a Bragg grating (BG) comprising a first BG port and a second BG port, wherein the first BG port is optically coupled to the second FM port, and wherein the Bragg grating is configured to alternately shift, lower and higher in wavelength, resonances of the standing wave optical resonator in a stop bandwidth of the Bragg grating;
- and
- a second mirror (SM) comprising a first SM port optically coupled to the second BG port.
A method for generating an optical frequency comb with a standing wave optical resonator comprising a Bragg grating, a first mirror (FM), a second mirror (SM), the method comprising:
- receiving, at a first FM port of the first mirror, an optical pump signal having a carrier wavelength in a stop bandwidth of the Bragg grating and which is closer to a resonance shifted higher in wavelength than to an adjacent resonance shifted lower in frequency, wherein the first mirror is optically coupled to a first port of the Bragg grating and the second mirror is optically coupled to a second port of the Bragg grating;
- transmitting a portion of the optical pump signal into the standing wave optical resonator;
- with the Bragg grating, alternately shifting, lower and higher in wavelength, resonances of the standing wave optical resonator in the stop bandwidth of the Bragg grating;
- generating the optical frequency comb in the standing wave optical resonator;
- and
- transmitting a portion of the optical frequency comb from the first FM port of the first mirror.
An apparatus for generating an optical frequency comb, the apparatus comprising:
- a non-reciprocal optical device (NROD) including a first NROD port configured to receive an optical pump signal, a second NROD port configured to transmit a portion of the optical pump signal and to receive a portion of the optical frequency comb, and a third NROD port configured to transmit a portion of the portion of the optical frequency comb;
- and
- a standing wave optical resonator, comprising:
- a first mirror (FM) comprising (a) a first FM port optically coupled to the first NROD port and configured to transmit the portion of the optical frequency comb to the first NROD port and to receive the portion of the optical pump signal from the first NROD port, and (b) a second FM port;
- a Bragg grating (BG) comprising a first BG port and a second BG port, wherein the first BG port is optically coupled to the second FM port, and wherein the Bragg grating is configured to alternately shift, lower and higher in wavelength, resonances of the standing wave optical resonator in a stop bandwidth of the Bragg grating, wherein the optical pump signal has a carrier wavelength in the stop bandwidth and which is closer to a resonance shifted higher in wavelength than to an adjacent resonance shifted lower in wavelength;
- and
- a second mirror (SM) comprising a first SM port optically coupled to the second BG port.
Dependencies are inferred from the claim text.