Title :
Design of a mode filter consisting of two dual-mode highly elliptical-core fibers
Author :
Kumar, Arun ; Das, U.K. ; Varshney, R.K. ; Goyal, I.C.
Author_Institution :
Dept. of Phys., Indian Inst. of Technol., New Delhi, India
fDate :
1/1/1990 12:00:00 AM
Abstract :
Coupling characteristics of directional couplers consisting of two dual-mode highly elliptical-core fibers have been studied in detail using a first-order perturbation approach, and two different designs of a mode filter are proposed. The study shows that the fibers should be polished normal to the minor axis of the core ellipse if the first design principle is used, whereas they should be polished normal to the major axis if the second design principle is used. It is also observed that the latter design is much easier to realize in practice
Keywords :
directional couplers; optical couplers; optical design techniques; optical fibres; optical filters; polishing; core ellipse; directional couplers; dual-mode highly elliptical-core fibers; fibre core ellipse minor axis; first-order perturbation approach; major axis perpendicular polishing; minor axis perpendicular polishing; mode filter; mode filter design; polished; Dielectric constant; Directional couplers; Filters; Optical fiber couplers; Optical fiber devices; Optical fiber sensors; Optical fibers; Optical interferometry; Rectangular waveguides; Tail;
Journal_Title :
Lightwave Technology, Journal of
