Title :
Tunable WDM dispersion compensation with fixed bandwidth and fixed passband center wavelength using a uniform FBG
Author :
Song, Y.W. ; Starodubov, D. ; Pan, Z. ; Xie, Y. ; Willner, A.E. ; Feinberg, J.
Author_Institution :
Dept. of Electr. Eng. Syst., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
We report an fiber Bragg grating-based tunable dispersion compensator with fixed bandwidth and fixed passband center wavelength for wavelength-division-multiplexing (WDM) channels. Chirping of the grating is achieved by bending a cantilever, and the tunability is realized by controlling the length of the induced chirping within a longer uniform grating. Due to the fixed center wavelength and bandwidth, crosstalk from adjacent wavelength bands is minimized and a single passband can potentially accommodate several WDM channels. We demonstrate tunable dispersion compensation up to 1500 ps/nm with a 10-cm uniform grating. Moreover, both negative and positive 400-ps/nm values are achieved in a single device with 2-nm bandwidth.
Keywords :
Bragg gratings; chirp modulation; compensation; optical crosstalk; optical fibre dispersion; optical tuning; telecommunication channels; wavelength division multiplexing; 10 cm; WDM channels; adjacent wavelength bands; crosstalk; fiber Bragg grating-based tunable dispersion compensator; fixed bandwidth; fixed center wavelength; fixed passband center wavelength; single passband; tunability; tunable WDM dispersion compensation; uniform FBG; uniform grating; Bandwidth; Bragg gratings; Chirp; Chromatic dispersion; Crosstalk; Delay effects; Fiber gratings; Optical fiber dispersion; Passband; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.1022015
