Communication Method Based on Highly Nonlinear Optical Fiber

Abstract

The invention relates to an XOR operation implementation method. The XOR operation implementation method comprises the following steps: injecting a first path signal into a high-nonlinearity optical fiber loop; meanwhile, injecting a second path signal into the high-nonlinearity optical fiber loop; meanwhile, injecting a detection signal into the high-nonlinearity optical fiber loop; and receivingthe detection signal from a receiving end, wherein the detection signal is taken as an XOR operation result of the first path signal and the second path signal, the first path signal and the second path signal have the same optical wavelength, and the first path signal and the second path signal have different transmission directions when being injected into the high-nonlinearity optical fiber loop. Through adoption of a communication method based on the high-nonlinearity optical fiber, an XOR operation is implemented based on a cross-phase modulation (XPM) effect between a nonlinear opticalloop mirror structure and the high-nonlinearity optical fiber; high coding and decoding calculation speeds are achieved; a large amount of time is saved; and the high-nonlinearity optical fiber is high in response speed. The communication method can be used for processing high-speed Tb / s optical signals. The invention also relates to a communication method based on a high-nonlinearity optical fiber.

Description

technical field [0001] The invention relates to a communication method, in particular to a method for realizing an exclusive-or operation and a communication method based on a highly nonlinear optical fiber. Background technique [0002] In recent years, a highly nonlinear fiber (HNLF, highly nonlinear fiber) having high nonlinearity has been developed. As this development progressed, optical signal processing using highly nonlinear optical fibers gained popularity. [0003] The general principle of secure communication based on all-optical network coding is as follows: [0004] refer to figure 1 , the two high-speed optical communication signals A and D are network encoded in the optical domain to realize signal encryption, and then the encrypted optical signal is transmitted, and the encrypted optical signal is decoded by network decoding technology at the receiving end again, and the signal A is recovered. [0005] The network coding principles involved, such as figu...

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Problems solved by technology

[0007] However, the XOR operation unit is often implemented by using hardware circuits, which has low calculation efficiency and wastes time.

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