Title :
Vector modes of six-port couplers
Author :
Stevenson, A.J. ; Love, J.D.
Author_Institution :
Australian National University, Optical Sciences Centre, Canberra, Australia
Abstract :
The polarisation patterns for the first six vector modes of six-port couplers with either ideal equilateral or nonideal isosceles cross-sections are determined using formal perturbation theory. They are shown to bear a close similarity with the corresponding modal patterns of a circularly symmetric fibre or an elliptical fibre, respectively.
Keywords :
fibre optics; optical couplers; optical waveguide theory; equilateral triangle; evanescent coupling; first six vector modes; formal perturbation theory; nonideal isosceles cross-sections; polarisation patterns; scalar modes; six-port fibre coupler; unbounded cladding;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870709
