Optical and Quantum Electronics

, Volume 46, Issue 8, pp 991–998 | Cite as

All-optical circular shift register based on semiconductor optical amplifiers

Original Paper

Abstract

We present a new and potentially integrable scheme to realize an all-optical circulating shift register consisting of a fiber-loop based optical buffer (OB) and an optical AND gate. The OB is implemented using semiconductor optical amplifier as a nonlinear element and the AND gate is realized by means of four wave mixing effect in a semiconductor optical amplifier. The operation of the shift register has been verified for a 10-bit input sequence at a sequence bit rate of 2.5 GHz and 10 GHz respectively. The simulation results show that \(\hbox {BER}=10^{-9}\) is achieved at optical signal-to-noise (OSNR) ratio of 16dB at the shift register output. The dependence of the output quality factor (\(Q\)-factor) on SOA parameters is also investigated and discussed.

Keywords

Semiconductor optical amplifier (SOA) Circulating shift register Four wave mixing (FWM) 

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Department of Electronics and Communication EngineeringThapar UniversityPatialaIndia

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