All-optical pseudorandom bit sequences generator based on TOADs

Abstract A scheme for all-optical pseudorandom bit sequences (PRBS) generator is demonstrated with optical logic gate ‘XNOR’ and all-optical wavelength converter based on cascaded Tera-Hertz Optical Asymmetric Demultiplexer (TOADs). Its feasibility is verified by generation of return-to-zero on–off keying (RZ-OOK) 263-1 PRBS at the speed of 1 Gb/s with 10% duty radio. The high randomness of ultra-long cycle PRBS is validated by successfully passing the standard benchmark test.

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