Title :
Simple structure high isolation multi/demultiplexer
Author :
Tanaka, T. ; Serizawa, H. ; Tsujimoto, Y.
Author_Institution :
Matsushita Electric Industrial Co. Ltd., Material Research Laboratory, Moriguchi, Japan
Abstract :
Wavelength division multiplexing (w.d.m.) techniques, which transmit light signals with different wavelengths through a single optical fibre, are required to increase transmission capacity. The letter describes a new type of multi/demultiplexer using an interference filter and a single graded-refractive-index (g.r.i.n.) rod lens. It has a simple structure and a low near-end crosstalk (less than ¿50 dB).
Keywords :
lenses; multiplexing equipment; optical communication equipment; optical filters; crosstalk; high isolation multi/demultiplexer; interference filter; light signals; optical fibre; single graded refractive index rod lens; transmission capacity; wavelength division multiplexing;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19800620
