Abstract

An all-optical 2-to-4 decoder unit with the assist of terahertz optical asymmetric demultiplexer (TOAD) is presented. The all-optical 2-to-4 decoder with a set of all-optical switches is designed which can be used to achieve a high-speed central processor unit using optical hardware. The unique output lines can be used for all-optical header processing. We attempt to develop an integrated all-optical circuit which can perform decoding of signal. This scheme is very simple and flexible for performing different logic operation and to design advanced complex logic. Simulated results are confirming the described methods.

Highlights

  • By the advent of optical networks and optical communication systems need for all-optical circuits and devices has been started

  • In this paper we propose and describe the terahertz optical asymmetric demultiplexer (TOAD) based switch to design 2-to-4 line decoder in all-optical domain

  • In a TOAD based switch the incoming signal is of wavelength λ2 and the control pulse signal is of wavelength λ1, where λ1 ≠ λ2

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Summary

Introduction

By the advent of optical networks and optical communication systems need for all-optical circuits and devices has been started. In order to achieve such a high bit rate, we should have a complete optical network without any electronics to optical conversion In such a network, all communication steps such as sending, receiving and data processing should be performed totally in optical domain. Among the different proposed schemes, the terahertz optical asymmetric demultiplexer (TOAD)/semiconductor optical amplifier (SOA)-assisted Sagnac gate effectively combines fast switching time and a reasonable noise figure, with the ease of integration and overall practicality that enables it to compete favorably with other similar optical time division multiplexing devices. In this paper we propose and describe the TOAD based switch to design 2-to-4 line decoder in all-optical domain It can convert binary information from n input line to a maximum of 2n unique output line

Operation of TOAD Based Switch
Principle and Design of All-Optical 2-to-4 Decoder
Simulated Results
Conclusion
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