Method for power regulation of a laser device, optical network terminal
By introducing a power adjustment region into the laser device, and utilizing the second active layer to gain or attenuate the optical signal under different bias voltages, the problem of uneven loss from each optical network unit to the OLT in the passive optical network is solved, the dynamic adjustment range requirement of BM-TIA is reduced, and the cost is reduced.
CN114843880BActive Publication Date: 2026-07-03HUAWEI TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUAWEI TECH CO LTD
- Filing Date
- 2021-02-02
- Publication Date
- 2026-07-03
AI Technical Summary
Technical Problem
The uneven loss is caused by the difference in distance between each optical network unit and the OLT in the passive optical network. The existing BM-TIA has a large dynamic adjustment range, which increases the cost.
Method used
By introducing a power adjustment region into the laser device, the second active layer can be used to gain or attenuate the optical signal under different bias voltages, thereby reducing the dynamic adjustment range requirement of the OLT for the BM-TIA.
Benefits of technology
By controlling the power adjustment range of the laser device, the power adjustment range of the laser device is increased, reducing the dynamic adjustment range requirement of the OLT on the BM-TIA, thereby reducing costs.
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Smart Images
Figure CN114843880B_ABST
Abstract
The embodiment of the application discloses a kind of laser devices, applied to optical communication field.The device includes: laser region, electrically isolated region and power adjustment region;When laser region is applied laser bias voltage, first active layer generates target optical signal, target optical signal is introduced and is optically coupled with the power adjustment region of laser region;Power adjustment region includes second active layer;When power adjustment region is applied forward bias voltage, second active layer amplifies target optical signal, and / or, when power adjustment region is applied reverse bias voltage, second active layer attenuates target optical signal.By power tuning region amplification or attenuation target optical signal, the device disclosed in the application reduces the demand of optical line terminal OLT to burst mode transimpedance amplifier BM-TIA dynamic adjustment range, thereby reducing equipment cost.
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