Title:
OPTICAL RECEIVER MODULE, OPTICAL RECEIVER DEVICE, AND FREQUENCY ADJUSTMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2024/055716
Kind Code:
A1
Abstract:
The present application provides an optical receiver module, applied to the field of coherent communications. The optical receiver module comprises a local oscillator laser, a coherent receiver, and a signal processor. The local oscillator laser is configured to output a local oscillator laser signal. The coherent receiver is configured to receive a target optical signal and the local oscillator laser signal, and output a target digital electrical signal according to the target optical signal and the local oscillator laser signal. The signal processor is configured to acquire a current power value of the target digital electrical signal, and obtain a target frequency offset according to the current power value and a target mapping relationship. The signal processor is further configured to adjust a center frequency of the local oscillator laser when the target frequency offset is greater than or equal to a first threshold. In the present application, the frequency of the local oscillator laser is adjusted by means of the feedback of the signal processor, without requiring a wavelength etalon, thereby reducing the costs of the optical receiver module.
Inventors:
CHEN XI (CN)
LI LIANGCHUAN (CN)
CHANG TIANHAI (CN)
LI LIANGCHUAN (CN)
CHANG TIANHAI (CN)
Application Number:
PCT/CN2023/105158
Publication Date:
March 21, 2024
Filing Date:
June 30, 2023
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04B10/61
Domestic Patent References:
| WO2016161638A1 | 2016-10-13 |
Foreign References:
| CN107911149A | 2018-04-13 | |||
| CN111045028A | 2020-04-21 | |||
| US20170294971A1 | 2017-10-12 | |||
| JP2017175326A | 2017-09-28 |
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