公开(公告)号：US20220221583A1

公开(公告)日：2022-07-14

申请号：US17224938

申请日：2021-04-07

Applicant: IMRA AMERICA, INC.

Inventor： Antoine Jean Gilbert Rolland ,  Eng Hiang Mark Yeo ,  Tomohiro Tetsumoto

IPC: G01S17/34 ,  G01S7/493 ,  G01S7/4912 ,  H04B10/64 ,  H04B10/40 ,  H04B10/2581 ,  H04B10/27

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.