Huawei Technologies Co., Limited

Hewlett Packard Enterprise Development LP

Zhixin Liu

Di Liang

Zhicheng Ye

Jinlong Wei

A system is provided for wavelength control in a passive optical network (PON) with point to multi-point (P2MP) topology. The system comprises a central node and a plurality of end nodes. The system comprises a central node transceiver configured for broadcasting to end nodes a reference signal carrying a management information, wherein the management information indicates a target frequency assigned to each end node, and an end node transceiver in each end node. The end node transceiver in each end node is configured for determining the target frequency by extracting the management information from the reference signal, generating a beating frequency by beating the reference signal with an uplink laser signal, and controlling a wavelength of the uplink laser signal to lock to the target frequency based on the beating frequency.

System and method for wavelength control in frequency referenced passive optical network

Examples herein relate to optical systems. In particular, implementations herein relate to an optical system including an optical transmitter configured to transmit optical signals. The optical transmitter includes a first optical source configured to emit light having different wavelengths, a waveguide, and an optical coupler configured to couple the emitted light from the first optical source to the waveguide. The optical transmitter further includes an array of two or more second optical sources coupled to the waveguide, each of the two or more second optical sources configured to be injection locked to a different respective wavelength of the emitted light transmitted via the waveguide from the first optical source. In some implementations, the first optical source is a master comb laser and the two or more second optical sources are slave ring lasers.

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London, United Kingdom

Zhixin Liu