公开(公告)号：WO2021211373A1

公开(公告)日：2021-10-21

申请号：PCT/US2021/026568

申请日：2021-04-09

Applicant: IMRA AMERICA, INC.

Inventor： ROLLAND, Antoine, Jean, Gilbert ,  YEO, Eng, Hiang, Mark ,  TETSUMOTO, Tomohiro

IPC: H01S3/067 ,  H01S3/30

Abstract: A tunable millimeter-wave signal oscillator includes two phase coherent optical oscillators, a fiber-ring cavity configured to generate two Stokes waves, and a photosensitive element converting the frequency difference of two optical oscillator into a millimeter-wave radiation. A chip-scale form factor millimeter-wave oscillator includes two continuous wave lasers, a plurality of micro-optical-resonators, an optical frequency division mechanism, two optical tunable bandpass filters, and a photosensitive element converting the pulse train of a frequency comb into a millimeter-wave radiation. A millimeter-wave phase noise analyzer includes an optical interferometer, two photosensitive elements, and a fundamental millimeter-wave frequency mixer. A millimeter-wave frequency counter includes an electro-optic optical frequency comb generator, a microwave voltage controlled oscillator, and an optoelectronic phase locked loop. A millimeter-wave electrical spectrum analyzer includes a millimeter-wave phase noise analyzer, a millimeter-wave amplitude detector, a millimeter-wave frequency counter, and a data processing unit.

公开(公告)号：WO2020076402A1

公开(公告)日：2020-04-16

申请号：PCT/US2019/044992

申请日：2019-08-02

Applicant: IMRA AMERICA, INC.

Inventor： KUSE, Naoya ,  FERMANN, Martin, E. ,  TETSUMOTO, Tomohiro ,  ROLLAND, Antoine, Jean, Gilbert

IPC: G02F1/35 ,  G02F1/365 ,  G02F1/39

Abstract: Systems and methods for precision control of microresonator (MR) based frequency combs may implement optimized MR actuators or MR modulators to control long-term locking of carrier envelope offset frequency, repetition rate, or resonance offset frequency of the MR. MR modulators can also be used for amplitude noise control. MR parameters can be locked to external reference frequencies such as a continuous wave laser or a microwave reference. MR parameters can be selected to reduce cross talk between the MR parameters, facilitating long-term locking. The MR can be locked to an external two wavelength delayed self-heterodyne interferometer for low noise microwave generation. An MR-based frequency comb can be tuned by a substantial fraction or more of the free spectral range (FSR) via a feedback control system. Scanning MR frequency combs may be applied to dead-zone free spectroscopy, multi-wavelength LIDAR, high precision optical clocks, or low phase noise microwave sources.

公开(公告)号：WO2019005824A1

公开(公告)日：2019-01-03

申请号：PCT/US2018/039542

申请日：2018-06-26

Applicant: IMRA AMERICA, INC.

Inventor： ROLLAND, Antoine, Jean, Gilbert ,  CASSINERIO, Marco ,  JIANG, Jie ,  FERMANN, Martin, E.

IPC: H01S3/136 ,  H01S3/139 ,  H01S3/067 ,  H01S3/082 ,  H01S3/10 ,  H01S3/107 ,  H01S3/11 ,  H01S3/13 ,  H01S3/00

CPC classification number: H01S3/1394 ,  H01S3/0014 ,  H01S3/005 ,  H01S3/0092 ,  H01S3/06712 ,  H01S3/06725 ,  H01S3/06791 ,  H01S3/082 ,  H01S3/10038 ,  H01S3/10046 ,  H01S3/107 ,  H01S3/1112 ,  H01S3/1305 ,  H01S3/1307 ,  H01S3/136 ,  H01S2301/02

Abstract: Examples of compact control electronics for precision frequency combs are disclosed. Application of digital control architecture in conjunction with compact and configurable analog electronics provides precision control of phase locked loops with reduced or minimal latency, low residual phase noise, and/or high stability and accuracy, in a small form factor.