Optical relay system and method

A relay system and one-way technology, applied in the field of optical communication, can solve problems such as complex implementation, slow electrical processing speed, and unsuitability for high-speed signal processing, and achieve the effects of simple implementation, phase noise elimination, and improved transmission performance

Inactive Publication Date: 2013-06-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This method involves a variety of spectral estimation methods, which is complex to implement. In addition, the speed of electrical processing is relatively slow, which is not suitable for high-speed signal processing.

Method used

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  • Optical relay system and method
  • Optical relay system and method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0050] see figure 1 , this embodiment provides an optical relay system, including:

[0051] The first optical signal distribution device is used to receive the input signal, divide the input signal into a first input signal and a second input signal, and output the first input signal and the second input signal respectively;

[0052] The phase detection device is used to receive the first input signal output by the first optical signal distribution device, extract the phase information of the first input signal, convert the phase information into an amplitude modulation signal, and output the amplitude modulation signal; wherein, the amplitude modulation signal It is the phase information carried on the intensity signal, and it is a high and low level signal, which is used to modulate the phase of the signal;

[0053] The amplitude regeneration device is used for receiving the second input signal output by the first optical signal distribution device, shaping the input signa...

Embodiment 2

[0059] This embodiment provides an optical relay system. Similar to Embodiment 1, the optical relay system provided by this embodiment also includes: a first optical signal distribution device, a phase detection device, an amplitude regeneration device, and a second optical signal distribution device. Device (optional) and phase regeneration and loading device, the function of each device is the same as embodiment 1, no longer detailed description here, this relay system is used in the all-optical of ODB (Optical Dual Binary, optical double binary) signal continue. see Figure 5 , the phase detection device in this embodiment includes:

[0060] The phase detection module is used to receive the first input signal output by the first optical signal distribution device, extract the phase information of the first input signal, and convert the phase information into an amplitude modulation signal, wherein the amplitude modulation signal is carried by the intensity signal The phas...

Embodiment 3

[0100] This embodiment provides an optical relay system. Similar to Embodiment 1, the optical relay system provided by this embodiment also includes: a first optical signal distribution device, a phase detection device, an amplitude regeneration device, and a second optical signal distribution device. device (optional) and phase regeneration and loading device, the function of each device is the same as embodiment 1, no longer detailed description here, this relay system is used for DPSK (Diffential Phase Shift Keying, differential phase shift keying) signal All-optical relay, see Figure 10 , the amplitude regeneration device of the optical relay system provided in this embodiment includes:

[0101] A continuous light emitting module for providing continuous light;

[0102] The phase calibration module is used to receive the second input signal output by the first optical signal distribution device and the continuous light provided by the continuous light emitting module, pe...

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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.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to an optical relay system and method. Background technique [0002] Compared with the pure intensity modulation signal, the spectral efficiency of the phase modulation optical signal is higher than that of the intensity modulation signal, and the ability to resist channel damage is stronger, but the optical relay technology is generally oriented to the intensity modulation signal. If the existing optical relay technology When applied to an amplitude modulated signal, the phase information of the signal will be lost, thus limiting the improvement of optical signal performance. [0003] During the transmission of optical signals, the phase noise introduced by the transmission line will deteriorate the performance of the signal. In order to suppress the phase noise, the existing technology provides an optical relay technology-optical regeneration method. Photoelectric conversion,...

Claims

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Application Information

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IPC IPC(8): H04B10/299
CPCH04B10/299
Inventor 李利军熊前进
Owner HUAWEI TECH CO LTD
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