Logic unit for CSRZ-OOK signals with the capability of simultaneously realizing logic OR and AND gates

Bingbing Wu; J. Wu; Lanlan Li; K. Xu; X. Hong; J. Lin

doi:10.1117/12.849518

1 December 2009 Logic unit for CSRZ-OOK signals with the capability of simultaneously realizing logic OR and AND gates

Bingbing Wu, J. Wu, Lanlan Li, K. Xu, X. Hong, J. Lin

Proceedings Volume 7630, Passive Components and Fiber-based Devices VI; 763007 (2009) https://doi.org/10.1117/12.849518
Event: Asia Communications and Photonics, 2009, Shanghai, Shanghai , China

Abstract

To cope with the development of Carrier-suppressed-return-to-zero-on-off-keying (CSRZ-OOK) modulation format, it is of great significance to investigate all-optical logic gates to process CSRZ-OOK format signals. To the best of our knowledge, for CSRZ-OOK signals, only logic AND gate has been demonstrated while other logic functions haven't been explored until now. In this paper, an all-optical logic unit to process CSRZ-OOK signals based on four-wave mixing (FWM) arising in a semiconductor optical amplifier (SOA) is proposed. A logic OR gate and two logic AND gates with the CSRZ-OOK format unchanged could be simultaneously achieved without reconfiguration in this single unit. The performance of 40 Gb/s logic operation is firstly evaluated with numerical simulations by a comprehensive dynamic model considering three-input induced FWM in an SOA. Then, experimental demonstrations at 10 Gb/s with clear waveforms and high extinction ratios (ERs) further verify the logic integrity of this scheme.

Citation Download Citation

Bingbing Wu, J. Wu, Lanlan Li, K. Xu, X. Hong, and J. Lin "Logic unit for CSRZ-OOK signals with the capability of simultaneously realizing logic OR and AND gates", Proc. SPIE 7630, Passive Components and Fiber-based Devices VI, 763007 (1 December 2009); https://doi.org/10.1117/12.849518

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KEYWORDS

Logic

Logic devices

Signal processing

Clocks

Modulation

Four wave mixing

Optical signal processing

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