Title :
Fused couplers: condition for insensitivity to external refractive index
Author :
Zheng, X.H. ; Snyder, A.W.
Author_Institution :
Australian National University, Optical Sciences Centre, Canberra, Australia
Abstract :
The condition necessary for fused tapered couplers to be insensitive to change in the external refractive index is derived. This condition depends critically on the shape of the coupler cross-section, e.g. it cannot occur in either the rectangular or in the elliptical cross-section.
Keywords :
optical couplers; optical fibres; refractive index; external refractive index insensitivity; fused tapered couplers; optical fibres;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870129
