Title :
Novel type of fibre-optic ring resonator
Author_Institution :
Siemens AG, Research Laboratories, Mÿnchen, West Germany
Abstract :
A fibre-optic ring resonator with highly wavelength-selective input reflection coefficient was realised by introducing a small local reflection in the ring. The influence of the local reflectivity on the input reflection coefficient is demonstrated. Maximum values for the input reflectivity and finesse are 55% and 10, respectively, using a fibre directional coupler (FDC) with a coupling ratio of 30%/70%.
Keywords :
directional couplers; fibre optics; optical couplers; optical fibres; optical filters; coupling ratio; fibre directional coupler; fibre-optic ring resonator; small local reflection; wavelength-selective input reflection coefficient;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870487
