Simple structure high isolation multi/demultiplexer

6 November 1980

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 16 (23) , 869-870
https://doi.org/10.1049/el:19800620

Abstract

Wavelength division multiplexing (w.d.m.) techniques, which transmit light signals with different wavelengths through a single optical fibre, are required to increase transmission capacity. The letter describes a new type of multi/demultiplexer using an interference filter and a single graded-refractive-index (g.r.i.n.) rod lens. It has a simple structure and a low near-end crosstalk (less than −50 dB).

Keywords

CROSSTALK
INTERFERENCE FILTER
LIGHT SIGNALS
HIGH ISOLATION MULTI/DEMULTIPLEXER
WAVELENGTH DIVISION MULTIPLEXING
TRANSMISSION CAPACITY
OPTICAL FIBRE
SINGLE GRADED REFRACTIVE INDEX ROD LENS

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