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System for extracting envelope signal of net load in optical packet signal, and implementation method

An envelope signal and payload technology, applied in the signal processing field of optical packet services, can solve the problems of scale and function incapacity, and achieve the effects of low cost, simple system hardware, and simple principle

Inactive Publication Date: 2007-12-26
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Third, photonic integration technology has just started, and its scale and function are far from being compared with microelectronic technology integrated circuits

Method used

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  • System for extracting envelope signal of net load in optical packet signal, and implementation method
  • System for extracting envelope signal of net load in optical packet signal, and implementation method
  • System for extracting envelope signal of net load in optical packet signal, and implementation method

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Embodiment 1

[0045] The invention provides a system and a realization method for extracting a payload envelope signal of an optical packet signal, and specifically relates to a photoelectric hybrid system and a solution. A system for extracting the payload envelope signal of an optical packet signal of the present invention includes: a photodetector, a clock recovery and filter, a Schott diode self-mixer, a low-pass filter and an amplifier, and a laser.

[0046] The invention provides a method for realizing the extraction of the net load envelope signal of the optical packet signal. As shown in Figure 1 and Figure 2, for signal light with a wavelength of s, the packet frame includes a low-speed frame header, a high-speed payload, and a guard band that keeps them at a certain time interval. The signal light bears the packet service, and is converted into an electrical signal after being passed through an optical detector. Then, as shown in Figure 3, through the clock recovery and filter, b...

Embodiment 2

[0051] The invention also relates to a plenoptic system and solution. A system for extracting the payload envelope signal of an optical packet signal according to the present invention comprises: a first wavelength division multiplexer, a first semiconductor optical amplifier, a first filter, a second wavelength division multiplexer, a second semiconductor Amplifier, second filter.

[0052] The invention provides a method for realizing the extraction of the net load envelope signal of the optical packet signal. In the present invention, two continuous lights are selected as the detection light, and the synchronization problem in most optical signal processing devices is avoided due to the continuity of the detection light. As shown in Figure 6, a packet frame includes a low-speed frame header, a high-speed payload, and a guard band that keeps them at a certain time interval. The signal light carries the packet service. After the frame header is separated, the high-speed payl...

Embodiment 3

[0056] The system and implementation method for extracting the payload envelope signal of the optical packet signal include the following contents.

[0057] First, the selection of clock recovery and filter function modules in the photoelectric hybrid scheme. The optical packet signal input to the system is converted into an electrical signal by the optical detector. Since the frame header and the payload rate are different, that is, the clock is different, the clock recovery part will generate two clock sequences, and select the one with the higher rate through the filter. Clock components, without having to be separated by the frame header, can obtain high-speed payload clock pulses relatively simply.

[0058] Second, the selection of the self-mixer in the photoelectric hybrid scheme. The present invention selects Schottky diodes, divides high-speed clock pulses into two paths, introduces time delay difference (phase difference) and then enters Schottky diodes, generates se...

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PUM

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Abstract

The invention comprises a photoelectric hybrid scheme and a full optic packet scheme. Said photoelectric hybrid scheme is used for realizing extraction of the net load envelop signals of optic packet signals; said full optic scheme is used for realizing the extraction of the net load envelop signals of optic packet signals, which can be used in ultra-speed optic packet signal process such as the system and network over 40Gbps.

Description

technical field [0001] The invention relates to signal processing of optical packet service, in particular to a method for extracting payload envelope signal of optical packet signal based on optoelectronic device, which can be used in switching nodes of optical packet switching or optical label switching network. Background technique [0002] With the rapid increase of people's demand for network services, the network capacity and transmission distance are continuously upgraded, especially the rapid increase of digital packet services, people are looking for ways to run IP services at the optical layer. The traditional method of implementing IP services at the optical layer is to use protocol mapping. This technology combines the traditional IP routing technology in the electrical domain with the wavelength division multiplexing optical transmission technology, and the routing and switching are completed by electrical IP routers. With the increase of wavelength division mul...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04B10/17H04J14/02
Inventor 王智王拥军吴重庆宋超
Owner BEIJING JIAOTONG UNIV
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