US 2010/0247111 A1Published application

Optical relay system and method

AssigneeHuawei Technologies Co., Ltd.

InventorsLijun Li, Qianjin Xiong

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Abstract

An optical relay system is provided, which includes a first optical signal distribution device (101), a phase detection device (103), an amplitude regeneration device (102), and a phase regeneration and load device (104). An optical relay method is further provided, which includes the following steps. A received input signal is divided into two paths; phase information of one path of the input signal is extracted, and is converted to an amplitude modulated signal; an amplitude of the other path of the input signal is restored, so as to generate an amplitude regenerated signal; a phase is loaded on the amplitude regenerated signal by using the amplitude modulated signal, so as to generate a phase regenerated signal. The system and method eliminate a phase noise of the signal in a transmission process, improve a transmission performance of the signal, and realize a simple implementation method.

Claims17

Dependent claims

An optical relay system, comprising:

a first optical signal distribution device, adapted to receive an input signal, divide the input signal into a first path of the input signal and a second path of the input signal, and separately output the first path of the input signal and the second path of the input signal;
a phase detection device, adapted to receive the first path of the input signal output by the first optical signal distribution device, extract phase information of the first path of the input signal, convert the phase information to an amplitude modulated signal, and output the amplitude modulated signal;
an amplitude regeneration device, adapted to receive the second path of the input signal output by the first optical signal distribution device, shape the second path of the input signal to obtain an amplitude regenerated signal, and output the amplitude regenerated signal;
and
a phase regeneration and load device, adapted to receive the amplitude modulated signal output by the phase detection device and the amplitude regenerated signal output by the amplitude regeneration device, and load a phase on the amplitude regenerated signal by using the amplitude modulated signal to generate a phase regenerated signal.

2 more elements

Dependencies are inferred from the claim text.