Variable-ratio, polarisation-insensitive, 3×3 fused biconical tapered couplers

18 July 1991

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

Vol. 27 (15) , 1336-1337
https://doi.org/10.1049/el:19910840

Abstract

We present a polarisation-insensitive, 3×3 fused biconical tapered coupler with a variable screw gauge that can change the coupling ratios from a splitting percentage of 11%-44%-45% to a uniformity of 33%-33%-34%, with excess loss maintained below 1.1 dB. The fabrication and packaging methods are described and wavelength tunability of the coupler is demonstrated.

Keywords

POLARISATION-INSENSITIVE
PACKAGING
VARIABLE SCREW GAUGE
THREE-POINT BENDING
VARIABLE RATIO TYPE
FABRICATION
FUSED BICONICAL TAPERED COUPLERS

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