Light-controlled light exchange structure adopting multiband mark

Abstract

The present invention relates to a light exchanging structure which is operated by the light and applies multiwavelength mark. The light exchanging matrix is composed of the array of light-operated light switch, the light grouping head is to be marked by the light impulse of several different wavelengthes and each combination of light impulses in different wavelenghes represents a different route information. The light impulse of different bit in light grouping head will control the light switch with different row and column in the light switch array separately according to the differences of timing sequence and optional wavelength so as to realize light route selection. The light grouping head to directly control the light operated light switch can avoid the light-electric conversion in conventional light exchanging to let the control course of the whole exchanging be realized in light

Description

Technical field: [0001] The invention relates to an optically controlled optical switching structure adopting multi-wavelength marks, which solves the problems of routing information processing and optical load routing control in optical switching, and belongs to the technical field of optical communication. Background technique: [0002] Optical fiber communication is gradually becoming the main method of modern communication transmission, especially trunk transmission, and the main direction of its development is to further expand the communication capacity. The recently developed dense division multiplexing (DWDM) and erbium-doped fiber amplifier (EDFA) technology, the so-called "DWDM+EDFA" technology, is very effective for communication expansion. The point-to-point communication capacity is already very large, reaching Tb / s. level. However, the indispensable electronic switching equipment in the communication network is still electronic, and the information processing speed ...

AI Technical Summary

Problems solved by technology

The main defect of this switching method is that the wavelength routing channel must be established before data transmission, and the channel wavelength is always occupied and released until it is completed

[0006] In the various optical switching modes mentioned above, the optical cross matrix as its core component is composed of optical switches that need to be electrically controlled. The switching of the optical path of this type of optical switch, that is, the switching time is relatively long (generally in milliseconds), and the routing control information must be After photoelectric conversion, the time required for routing control is also long, so it is difficult to achieve fast optical switching

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