Title:
OPTICAL FIBER MICROWAVE FREQUENCY TRANSFER METHOD BASED ON LASER FREQUENCY OFFSET LOCKING
Document Type and Number:
WIPO Patent Application WO/2022/133685
Kind Code:
A1
Abstract:
Disclosed in the present invention is an optical fiber microwave frequency transfer method based on laser frequency offset locking, applied to a microwave frequency emitting end, and comprising: generating a main laser signal and a slave laser signal by using a main laser and a slave laser, respectively; transmitting the generated main laser signal and slave laser signal to a microwave frequency receiving end by means of an optical fiber link; locking a frequency difference between the main laser and the slave laser to a preset microwave frequency by using the main laser signal and the slave laser signal and by using laser frequency offset locking technology; receiving a backhaul laser signal returned by the receiving end; and generating a reference signal, and according to the reference signal and the backhaul laser signal, compensating noise of the optical fiber link by adjusting the preset microwave frequency so that the microwave frequency subsequently received by the receiving end is the frequency of the reference signal. In the present invention, the objectives of reducing the influence of the laser polarization effect and the fiber dispersion effect and improving precision and stability of microwave signal frequency transfer can be realized.
Inventors:
ZHANG YI (CN)
Application Number:
PCT/CN2020/138117
Publication Date:
June 30, 2022
Filing Date:
December 21, 2020
Export Citation:
Assignee:
XIAN CREATION KEJI CO LTD (CN)
International Classes:
H04J3/06
Foreign References:
| CN103490816A | 2014-01-01 | |||
| CN108123359A | 2018-06-05 | |||
| US20140064728A1 | 2014-03-06 | |||
| CN106877930A | 2017-06-20 |
Attorney, Agent or Firm:
XI'AN JUST IP FIRM (CN)
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