Biconical taper coaxial coupler filter

24 October 1985

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

Vol. 21 (22) , 1033-1034
https://doi.org/10.1049/el:19850733

Abstract

The wavelength-dependent transmission characteristics of biconical tapers fabricated from single-mode fibres of depressed cladding are examined. The wavelength response is found to be oscillatory with large modulation depths. We describe here a simple fabrication technique which produces narrow passband filters of low loss and high extinction ratio (>30dB).

Keywords

LARGE MODULATION DEPTHS
HIGH EXTINCTION RATIO
SINGLE-MODE FIBRES
NARROW PASSBAND FILTERS
DEPRESSED CLADDING
FABRICATION TECHNIQUE
COAXIAL COUPLER FILTER
LOW LOSS
WAVELENGTH-DEPENDENT TRANSMISSION CHARACTERISTICS
BICONICAL TAPERS
OPTICAL FIBRES

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