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An all-optical 1times2 high contrast ratio (CR) switch based on the symmetric Mach-Zehnder (SMZ) interferometers is presented. Simulation results show a remarkable improvement of the inter-output CR (~25 dB) between the two outputs compared with an existing SMZ switch. It is shown that the proposed switch offers high values of inter-output CR (Gt 32dB) over a wide range of input powers using appropriate...
This paper introduces a novel 1×2 all-optical switch based on Tri-arm Mach-Zehnder (TaMZ) that uses an all-optical flip-flop (AOFF). The proposed switch is analytically modeled and simulation shows a marked improvement in signal on/off contrast ratio (CR) between two outputs over a larger range of control signal power compared to the existing symmetric Mach- Zehnder (SMZ) switches. In addition, TaMZ...
The key issue in being able to implement efficient all-optical switching/routing is the ability to carry out synchronization between the switching node and the incoming packets. In this paper we report the simulation results of all optical clock recovery scheme for packet-level self-synchronization using a single symmetric Mach-Zehnder (SMZ) switch. Simulation results demonstrate that clock recovery...
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