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International Journal of

Recent Trends in Engineering

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International Journal of Recent Trends in Engineering (IJRTE)

ISSN 1797-9617

Volume 1, Number 3, May 2009

Issue on Electrical & Electronics

Page(s): 115-119

Multimode Interference (MMI) coupler based All Optical Switch: Design, Applications & Performance Analysis

G.Singh, R.P.Yadav, and V.Janyani

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Abstract

This paper reviews the basic of multimode interference (MMI) coupler and its application in optics, especially for optical switching. We have demonstrated the design & performance of 2 x 2 MMI coupler based all optical switch of lesser dimensions than conventional structures. This structure is based on special multimode region shape, which leads switch to have less coupling loss & lesser cross talk. The variations of the refractive indices of various sections to achieve switching actions are kept in the range of 1-2%. In later part, the proposed switch is used for design & analysis of higher order switches (4x4 & 8x8 switches) using Banyan, Benus and Spanky- Benus architectures.

Index Terms

All optical switches, multimode interference (MMI) coupler, self imaging, large switch architectures

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