Title :
Automatically tracked dispersion compensation with penalty-free tunable dispersion equalizer for 40 Gbit/s systems
Author :
Sugihara, T. ; Shimomura, K. ; Shimizu, K. ; Kobayashi, Y. ; Matsuoka, K. ; Hashimoto, M. ; Hashimoto, T. ; Hirai, T. ; Matsumoto, S. ; Ohira, T. ; Takabayashi, M. ; Yoshiara, K. ; Mizuochi, Takashi
Author_Institution :
Inf. Technol. R&D Center, Mitsubishi Electr. Corp., Kamakura, Japan
Abstract :
The automatic control of a tunable dispersion equalizer by means of a bit error monitor was demonstrated. The tunable dispersion equalizer developed consists of a chirped fiber grating and divided thin film heaters. From the tests of the step response and the automatic DEQ control, we confirmed that the tunable dispersion equalizer based on the grating and heaters is suitable for adaptive dispersion compensation of dispersion variations caused by slowly varying environmental conditions with a fluctuation rate of several minutes or more.
Keywords :
adaptive equalisers; compensation; diffraction gratings; optical fibre communication; optical fibre dispersion; optical tuning; telecommunication control; 40 Gbit/s; adaptive dispersion compensation; automatic DEQ control; automatic control; bit error monitor; chirped fiber grating; dispersion variations; fluctuation rate; step response; thin film heaters; tunable dispersion equalizer; Automatic control; Automatic testing; Chirp; Computerized monitoring; Equalizers; Error correction; Fiber gratings; Optical fiber testing; Temperature control; Transistors;
Conference_Titel :
Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002
Print_ISBN :
1-55752-701-6
DOI :
10.1109/OFC.2002.1036567
