All-optical correlator based on 3x3 coupler with feedback for optical header processing

Yaping Wang; Chongqing Wu; Yongjun Wang; Mu Cheng

doi:10.1117/12.802340

11 November 2008 All-optical correlator based on 3x3 coupler with feedback for optical header processing

Yaping Wang, Chongqing Wu, Yongjun Wang, Mu Cheng

Proceedings Volume 7134, Passive Components and Fiber-based Devices V; 71342K (2008) https://doi.org/10.1117/12.802340
Event: Asia-Pacific Optical Communications, 2008, Hangzhou, China

Abstract

A novel correlator based on 3x3 coupler with dual loops which perform XOR operation and feedback with power compensating is proposed. The validity of device is demonstrated by the simulation with realistic parameters at 10Gb/s and 40Gb/s. For this kind of correlator, the amplified spontaneous emission (ASE) noise accumulation is the crucial limitation. The relationship between the output signal-to-noise ratio (SNR) and bits to be compared is analyzed theoretically. The ASE noise is retrained and the output SNR is enhanced by introducing the assistant light advisably. Therefore, this device can perform the comparison of arbitrary length data. If the dual loops length is minimized by integrate, the devise is applicable for the higher speed data.

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Yaping Wang, Chongqing Wu, Yongjun Wang, and Mu Cheng "All-optical correlator based on 3x3 coupler with feedback for optical header processing", Proc. SPIE 7134, Passive Components and Fiber-based Devices V, 71342K (11 November 2008); https://doi.org/10.1117/12.802340

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KEYWORDS

Signal to noise ratio

Optical correlators

Optical amplifiers

Interference (communication)

Optical filters

Phase shifts

Multiplexers

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