Full-light controlled optical switch system

An optical switch and optical control technology, applied in the field of optical communication, can solve the problems of not being able to effectively form an optical switch matrix, complex polarization control, and great practicality, achieving compact structure, small output signal chirp, and mature technology. Effect

Inactive Publication Date: 2008-08-06
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

The former has a simple structure, fast switching speed, and low switching energy, but it is inconvenient to cascade, which is not conducive to integration
The latter cascading is relatively convenient and conducive to integration, but the polarization control is complicated, and the contribution of the control light to the phase shift is small
[0006] The all-optical switches under study also incl...

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  • Full-light controlled optical switch system

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Embodiment Construction

[0017] In order to better understand the technical solution of the present invention, the implementation manner will be further described below in conjunction with the accompanying drawings.

[0018] Fig. 1 is a schematic structural diagram of the MZI-SOA wavelength converter in the present invention. The MZI-SOA wavelength converter is composed of two SOAs that constitute a Mach-Zehnder interference structure (MZI). It has a continuous optical input port, an output port, and two signal optical input ports. The signal light can be from any signal light Input port input.

[0019] Continuous light λ c Entering the MZI-SOA wavelength converter, it is first divided into two beams. When the two beams propagate in the SOA, the effective refractive index of the SOA changes with the change of the optical power injected from the signal light input end, resulting in continuous light λ c The phase shift in the SOA changes. Through the MZI interference structure, the phase shift change ...

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Abstract

The invention relates to an all-optical controlled optical switch system, wherein, a control signal is continuous light with different wavelengths, and can realize the output of input optical signals from one or a plurality of output ports. Input signal light is divided into two parts; when control light exists, the optical information of one part of input signal light is firstly converted onto the control light through a wavelength converter, the control light with different wavelengths passes through a wavelength routing module, then is separated, and is output from corresponding ports of the wavelength routing module; the other part of signal light is changed into the continuous light through a traveling wave semi-conductor optical amplifier, split through a coupler, and then is input into each second-stage wavelength converter; the control light with the information and the continuous light the wavelength of which is the same as that of the input signal light undergo second wavelength transformation in each second-stage wavelength converter, and the output of the second wavelength converters is the output of the all-optical controlled optical switch system. The invention solves the problem of the all-optical controlled optical switch.

Description

technical field [0001] The invention relates to an all-optical control optical switch system, in particular to an all-optical system based on the optical wavelength conversion of the Mach-Zehnder interference semiconductor optical amplifier (MZI-SOA) and the gain saturation of the traveling wave semiconductor optical amplifier (SOA). A controlled optical switch system solves problems such as all-optical switch control and optical switch switching, and belongs to the technical field of optical communication. Background technique [0002] Wavelength Division Multiplexing (WDM) transmission technology and all-optical switching technology are the key technologies of all-optical network. Optical switches play an important role in both. In WDM transmission technology, the applications of optical switches include wavelength switching, wavelength adaptation, optical timing extraction, optical code stream regeneration, optical return-to-zero code (RZ code) and optical non-return-to-...

Claims

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Application Information

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IPC IPC(8): H04J14/02G02B6/35H04B10/12H04B10/25
Inventor 刘智鑫肖石林梁铮
Owner SHANGHAI JIAO TONG UNIV
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