US 12,455,490 B2
Low relative phase noise optical comb generation device
Kazuhiro Imai, Tokyo (JP); and Motonobu Kourogi, Tokyo (JP)
Assigned to XTIA LTD, Tokyo (JP)
Appl. No. 18/547,476
Filed by XTIA LTD, Tokyo (JP)
PCT Filed Dec. 21, 2021, PCT No. PCT/JP2021/047346
§ 371(c)(1), (2) Date Aug. 22, 2023,
PCT Pub. No. WO2022/176378, PCT Pub. Date Aug. 25, 2022.
Claims priority of application No. 2021-026718 (JP), filed on Feb. 22, 2021.
Prior Publication US 2024/0126137 A1, Apr. 18, 2024
Int. Cl. G02F 1/35 (2006.01); G01B 9/02001 (2022.01); G01S 7/484 (2006.01)
CPC G02F 1/353 (2013.01) [G01B 9/02008 (2013.01); G01S 7/484 (2013.01); G02F 2203/56 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A low relative phase noise optical comb generation device, comprising:
at least three oscillators for generating frequency signals with mutually different frequencies;
at least two frequency converters to which a frequency signal obtained by one oscillator of the at least three oscillators and respective frequency signals obtained by respective oscillators other than the one oscillator are input; and
at least two optical comb generators to which at least two types of modulation signals with mutually different frequencies converted by the at least two frequency converters are supplied,
wherein the at least two frequency converters supply the at least two types of modulation signals, in which a relative phase noise is reduced respectively as a sum frequency signal or a difference frequency signal of the frequency signal by the one oscillator and a frequency signal by other oscillator, to the at least two optical comb generators as driving signals.