US 12,345,530 B2
Photonics gyroscope with broadband light source
Jianfeng Wu, Tucson, AZ (US); Tiequn Qiu, Glendale, AZ (US); Matthew Wade Puckett, Phoenix, AZ (US); Steven Tin, Edina, MN (US); and Glen A. Sanders, Scottsdale, AZ (US)
Assigned to Honeywell International Inc., Charlotte, NC (US)
Filed by Honeywell International Inc., Charlotte, NC (US)
Filed on Mar. 30, 2023, as Appl. No. 18/193,448.
Prior Publication US 2024/0328783 A1, Oct. 3, 2024
Int. Cl. G01C 19/72 (2006.01); H01S 3/00 (2006.01)
CPC G01C 19/727 (2013.01) [G01C 19/722 (2013.01); H01S 3/0071 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A photonics gyroscope, comprising:
a light source on a photonics chip, the light source configured to emit a light beam with a broadband spectrum;
a waveguide resonator on the photonics chip, the waveguide resonator in optical communication with the light source through an optical path provided by a first waveguide arrangement comprising a first waveguide optically coupled to an output of the light source, and a second waveguide optically coupled to the waveguide resonator;
a first phase modulator on the photonics chip and in optical communication with the waveguide resonator through the first waveguide arrangement;
a reflective component on the photonics chip and in optical communication with the waveguide resonator;
a first optical detector on the photonics chip and in optical communication with the waveguide resonator, wherein the second waveguide is optically coupled between the first phase modulator and an input of the first optical detector;
a second optical detector on the photonics chip and operatively coupled to the light source; and
a relative intensity noise (RIN) servo loop coupled between an output of the second optical detector and an input of the light source.