Title :
An optical thin film Bessel filter for 40Gbit/sec -100GHz spacingD-WDM system
Author :
Takeda, Shigeki ; Shigeoka, Yoshiyuki
Author_Institution :
Kyocera Corp., Tokyo
Abstract :
It is difficult to employ conventional Butterworth filters in 40 Gbit/sec applications with 100 GHz-spacing due to their strong group delay dispersions. This paper shows design, fabrication and measurements of a thin film Bessel filter applicable for 40 Gbit/sec VSB signals, and compares the results to a typical Butterworth filter. This Bessel filter has very low dispersion because of its flattened group delay, and in turn, this allows VSB signal filtering with minimal linear distortions
Keywords :
Butterworth filters; delays; optical communication equipment; optical design techniques; optical distortion; optical fabrication; optical fibre communication; optical fibre dispersion; optical filters; thin film devices; wavelength division multiplexing; 100 GHz; 40 Gbit/s; Bessel filter; Butterworth filters; DWDM system; VSB signals; flattened group delay; group delay dispersions; linear distortions; optical dispersion; optical filter; signal filtering; thin film filter;
Conference_Titel :
Optical Communication, 2002. ECOC 2002. 28th European Conference on
Conference_Location :
Copenhagen
Print_ISBN :
87-90974-63-8
