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1. (WO2018040224) SYSTEM AND METHOD FOR PHOTONIC DIGITAL TO ANALOG CONVERSION

Pub. No.:    WO/2018/040224    International Application No.:    PCT/CN2016/101581
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Mon Oct 10 01:59:59 CEST 2016
IPC: H04B 10/556
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
Inventors: BAHRAMIABARGHOUEI, Hadi
FAZAL, Irfan Muhammad
Title: SYSTEM AND METHOD FOR PHOTONIC DIGITAL TO ANALOG CONVERSION
Abstract:
A system and method for communicating an electrical signal, such as a radio-over-fiber signal, to a transmitter. The method includes separately amplitude encoding bits of the signal, based on a significance of each bit, into n separate amplitude modulated outputs, gathering the n amplitude modulated outputs and converting the gathered n amplitude modulated outputs into n OAM modes, and coupling the n OAM modes into an optical fiber for transmission to the transmitter. In an implementation, the method further includes receiving the transmitted n OAM modes as an optical output from the optical fiber, converting the received n OAM modes into an analog electrical signal based on a measured amplitude of the optical output, and amplifying and transmitting the electrical signal.