All optical SR and D flip-flop employing XGM effect in semiconductor optical amplifiers |
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Authors: | Sanmukh Kaur RS Kaler |
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Institution: | Department of Electronics and Communication Engineering, Thapar University, Patiala, India |
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Abstract: | This paper presents a simple and novel scheme for all-optical SR and D flip-flop employing cross gain modulation (XGM) effect in two wideband semiconductor optical amplifiers. The proposed flip-flop has a fast response, with less than 20 ps transition times for both rising and falling edges. The FF speed-limit is mainly determined by the SOA recovery time and the intra-FF coupling length. The simulation results exhibit a contrast ratio of 13 dB between two states with an AM of less than 2.5 dB.The distinctive simplicity of the flip-flop implies reduced footprint and low power consumption which makes it ideal for photonic integration. |
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Keywords: | Cross-gain modulation (XGM) Flip-flop (FF) Semiconductor optical amplifier (SOA) |
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