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All-optical recognition scheme for dual two-dimensional optical code optical label

A technology of optical tags and optical codes, which is applied in the field of encoding and decoding technology of optical packet switching networks, can solve problems such as label identification schemes without two-dimensional encoding, and achieve the effects of increased code word capacity, increased number, and fast speed

Inactive Publication Date: 2013-04-17
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

The above two schemes are only for the processing and identification of one-dimensional encoded labels, and there is no identification scheme for two-dimensional encoded labels

Method used

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  • All-optical recognition scheme for dual two-dimensional optical code optical label
  • All-optical recognition scheme for dual two-dimensional optical code optical label
  • All-optical recognition scheme for dual two-dimensional optical code optical label

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Embodiment Construction

[0019] In the following, in combination with specific implementation methods, an all-optical identification scheme of a dual 2D-OC tag of the present invention will be further described in detail by taking 2D-OC with only three wavelengths as an example.

[0020] figure 1 It is a schematic structural diagram of the dual 2D-OC optical label adopted in the present invention. The optical tag is composed of two 2D-OCs, each 2D-OC has three frequency coded pulses, and the two 2D-OCs contain the same three frequencies.

[0021] figure 2 It is a structural diagram of a core node in an optical packet switching network. When the optical packet arrives at the core node, the label and the payload are separated by filter 1 first. The label is sent to the label identification module 2 , and the payload is sent to the switching module 14 . The label processing module identifies the label, extracts the routing information, and then controls the switching matrix to complete the correspon...

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Abstract

The invention discloses an all-optical recognition method for a dual two-dimensional optical code optical label. The structure of an optical label all-optical recognition module mainly comprises a filter, a nonlinear optical loop mirror of an SOA, a wavelength converter and a nonlinear SOA. The all-optical recognition method is mainly characterized in that: label signals are processed in a time domain by the nonlinear optical loop mirror of the SOA, and are recognized in a frequency domain by using the principle of four-wave mixing of the nonlinear SOA, and a specific new wavelength pulse is extracted as a recognition signal of the optical label.

Description

technical field [0001] The invention belongs to the technical field of communication, and specifically relates to an optical code division multiple access (OCDMA) communication technology and an optical packet switching (OPS) network codec technology based on codec optical label processing. Background technique [0002] Due to the existence of electronic bottlenecks, all-optical signal processing technology is often required in optical packet switching networks. Especially in systems with a single-channel rate of ultra-high 40Gb / s, all-optical signal processing is inevitable. Usually the optical packet is composed of label and payload. When the optical packet arrives at the switching node, the packet processing module first separates the label from the payload, and the label is sent to the label processing module, while the payload is sent to the switching module. . The label processing module identifies the label, extracts the routing information, and then calculates the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J14/00H04Q11/00G02F1/35
Inventor 邱昆王乐阳张崇富周恒
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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