US 12,306,042 B2
Random ring photonic integrated circuit spectrometer
Jaime Cardenas Gonzalez, Rochester, NY (US); and Xiaotong He, Rochester, NY (US)
Assigned to UNIVERSITY OF ROCHESTER, Rochester, NY (US)
Appl. No. 18/028,410
Filed by University of Rochester, Rochester, NY (US)
PCT Filed Oct. 12, 2021, PCT No. PCT/US2021/054491
§ 371(c)(1), (2) Date Mar. 24, 2023,
PCT Pub. No. WO2022/081520, PCT Pub. Date Apr. 21, 2022.
Claims priority of provisional application 63/091,650, filed on Oct. 14, 2020.
Prior Publication US 2023/0366735 A1, Nov. 16, 2023
Int. Cl. G01J 3/02 (2006.01); G01J 3/12 (2006.01); G01J 3/28 (2006.01)
CPC G01J 3/0297 (2013.01) [G01J 3/2803 (2013.01); G01J 3/0205 (2013.01); G01J 3/0256 (2013.01); G01J 3/0286 (2013.01); G01J 2003/1269 (2013.01); G01J 3/28 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An integrated optical spectrometer comprising:
an optical bus configured to accept a light to be measured;
an array of integrated ring resonators and detectors, each ring resonator optically coupled to said optical bus and to at least one detector, and
wherein each ring resonator in the array of ring resonators is an optical cavity; and
a processor configured to perform a matrix multiplication process operatively coupled to each detector,
wherein said matrix multiplication process determines a spectral content of the light to be measured based on data from said array of integrated ring resonators and detectors and a calibration matrix of said array of integrated ring resonators and detectors; and
wherein said matrix multiplication process comprises an operation of decomposing an incoming spectrum of light into a linear combination of ring resonator modes,
wherein the modes are the spectral content of light to be measured that resonates in the cavity of each ring resonator.