Title:
OPTICAL MODULE AND RECEIVED OPTICAL POWER MONITORING METHOD
Document Type and Number:
WIPO Patent Application WO/2022/174646
Kind Code:
A1
Abstract:
In the optical module provided in the present disclosure, a silicon optical chip comprises: an optical attenuator, configured to transmit, to a photodetector, signal light inputted by external optical fibers; a photodetector, configured to receive the signal light passing through the attenuator and to output an optical current; the optical module further comprises: a transimpedance amplifier, having an input end connected to the silicon optical chip, and configured to receive the optical current and output a detection current by means of a detection current output end; a sampling circuit, having an input end connected to the detection current output end, and configured to convert the detection current into a detection voltage and output same by means of the output end; an attenuation controller, having a current output end connected to the optical attenuator to apply a current to the optical attenuator to cause the optical attenuator to adjust the optical power of the signal light transmitted to the photodetector; and an MCU, having an input end for receiving the detection voltage, and configured to output a control signal according to the detection voltage to control the attenuation controller to adjust the magnitude of the current applied to the optical attenuator. The optical module according to some embodiments enables the photodetector to receive signal light of a suitable optical power, and can accurately generate the received optical power of the optical module.
Inventors:
YANG SHIHAI (CN)
ZHU YANXIANG (CN)
ZHANG QIANG (CN)
ZHAO QISHENG (CN)
ZHU YANXIANG (CN)
ZHANG QIANG (CN)
ZHAO QISHENG (CN)
Application Number:
PCT/CN2021/134681
Publication Date:
August 25, 2022
Filing Date:
December 01, 2021
Export Citation:
Assignee:
HISENSE BROADBAND MULTIMEDIA TECHNOLOGY CO LTD (CN)
International Classes:
H04B10/40; G02B6/42
Foreign References:
| CN111884725A | 2020-11-03 | |||
| CN104811249A | 2015-07-29 | |||
| CN208768073U | 2019-04-19 | |||
| CN110794529A | 2020-02-14 | |||
| JPH11205395A | 1999-07-30 |
Attorney, Agent or Firm:
QINGDAO LAWSCI INTELLECTUAL PROPERTY CO., LTD. (CN)
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