Title :
Expansion of bandwidth of tunable dispersion compensator based on ring resonators utilizing negative group delay
Author :
Takahashi, Hidenori ; Inohara, Ryo ; Nishimura, Kohsuke ; Usami, Masashi
Author_Institution :
KDDI R&D Labs. Inc., Kamifukuoka, Japan
fDate :
6/1/2006 12:00:00 AM
Abstract :
In this paper, a novel method to expand the compensation bandwidth of a tunable dispersion compensator (TDC) based on ring resonators utilizing a negative group-delay peak is presented. The operation conditions of the ring resonator, where the negative group-delay peak appeared, are theoretically analyzed and then experimentally verified. The ratio of the usable bandwidth to the channel spacing (25 GHz) was increased from 75% to 86%, employing the proposed scheme of the expansion method. The improved dispersion-compensation characteristic was confirmed in a 10-Gb/s experiment.
Keywords :
channel spacing; delays; optical communication equipment; optical fibre communication; optical fibre dispersion; optical resonators; 10 Gbit/s; 25 GHz; bandwidth expansion; channel spacing; compensation bandwidth; dispersion compensation; negative group delay; ring resonators; tunable dispersion compensator; Arrayed waveguide gratings; Bandwidth; Channel spacing; Delay; Optical fiber dispersion; Optical filters; Optical ring resonators; Optical waveguides; Resonator filters; Wavelength division multiplexing; Compensation; optical fiber dispersion; optical resonators; optical waveguide filters; ring resonators; tunable filters;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2006.874588
