Title :
Entirely thin-film allpass coupled-cavity filters in a parallel configuration for adjustable dispersion-slope compensation
Author :
Jablonski, M. ; Tanaka, Y. ; Yaguchi, H. ; Furuki, K. ; Sato, K. ; Higashi, N. ; Kikuchi, K.
Author_Institution :
Oyokoden Labs., Saitama, Japan
Abstract :
Conventional dispersion-slope compensation filters suffer from a fundamental tradeoff between the amount of dispersion-slope compensation and the compensation bandwidth. A novel multireflection device, composed of two coupled cavity filters in a parallel configuration is proposed that has an adjustable dispersion-slope independent of the compensation bandwidth. The device provides an adjustable dispersion-slope value between -6.7 and -35.7 ps/sup 3/ over a bandwidth of 3 nm. The center wavelength is adjustable over a 10-nm range.
Keywords :
all-pass filters; compensation; optical communication equipment; optical fibre dispersion; optical resonators; optical waveguide filters; reflectivity; adjustable dispersion-slope compensation; adjustable dispersion-slope value; center wavelength; compensation bandwidth; multireflection device; parallel configuration; thin-film allpass coupled-cavity filters; Bandwidth; Delay; Equalizers; Optical fiber dispersion; Optical films; Optical filters; Optical interferometry; Optical resonators; Reflection; Transistors;
Journal_Title :
Photonics Technology Letters, IEEE
