Granted Patent
B2
US 12,474,158 · App. 18/509,739 · Granted Nov 18, 2025
Microresonator-frequency-comb-based platform for clinical high-resolution optical coherence tomography
Inventors:
Michal Lipson (New York, NY); Xingchen Ji (New York, NY); Alexander Klenner (New York, NY); Xinwen Yao (Baltimore, MD); Yu Gan (Harriston, NJ); Alexander L. Gaeta (New York, NY); Christine P. Hendon (Bronx, NY)
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Abstract
A method of providing optical coherence tomography (OCT) imaging may comprise using an on-chip frequency comb source interfaced with an OCT system by a circulator as an imaging source and reconstructing OCT images from resulting spectral data from target tissue illuminated by the imaging source.
Claims (23)
1 . A device comprising:
a chip comprising a substrate; and
a resonator disposed on the chip and configured to generate a frequency comb in a non-phase-locked state based on receiving a pump signal, wherein the resonator is configured to be tuned to control a resonance of the resonator relative to a frequency of the pump signal, and
wherein the chip is configured to integrate with an optical coherence tomography (OCT) system such that the frequency comb is used as an imaging source for the OCT system.
2 . The device of claim 1 , wherein the resonator comprises silicon nitride.
3 . The device of claim 1 , wherein the resonator comprises one or more of silica or silicon.
4 . The device of claim 1 , wherein the resonator comprises one or more of aluminum nitride or crystalline fluoride.
5 . The device of claim 1 , wherein the resonator comprises one or more of diamond or AlGaAs.
6 . The device of claim 1 , wherein the resonator comprises a microresonator.
7 . The device of claim 1 , wherein the resonator comprises a high-Q resonator.
8 . The device of claim 1 , wherein the resonator comprises an ultra high-Q resonator.
9 . The device of claim 1 , further comprising a cladding disposed on the substrate, wherein the resonator is disposed on the cladding.
10 . The device of claim 1 , further comprising a micro-heater configured to provide temperature tuning to control cavity resonance of the resonator.
11 . The device of claim 10 , wherein a micro-heater comprises platinum.
12 . The device of claim 1 , further comprising a laser configured to supply the pump signal to the resonator.
13 . The device of claim 12 , wherein the laser comprises one or more of a distributed feedback (DFB) laser, an external cavity laser, or a Fabry-Perot laser.
14 . The device of claim 1 , further comprising a waveguide configured to supply the pump signal to the resonator.
15 . The device of claim 14 , wherein the waveguide comprises silicon nitride.
16 . The device of claim 1 , wherein the frequency comb has a bandwidth of 110 nm at 30 dB and a line spacing of 38 GHz.
17 . The device of claim 1 , wherein the resonator exhibits a Q of up to 37 million.
18 . The device of claim 1 , wherein the resonator exhibits a Q of up to 8 million.
19 . The device of claim 1 , wherein the resonator exhibits a loss of from 3 dB/m to 1 dB/m.
20 . The device of claim 1 , wherein the resonator exhibits a loss of less than 3 dB/m.
Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Nov 29, 2023
From: LIPSON, MICHAL; JI, XINGCHEN; YAO, XINWEN; GAN, YU; GAETA, ALEXANDER L.; HENDON, CHRISTINE P.
To: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
Reel/Frame 065692/0633 →
Continuity (5)
Provisional Application
62607825
· Dec 19, 2017
Provisional Application
62540412
· Aug 2, 2017
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