Open AccessFlexibly tunable multichannel filter and bandpass filter based on long-period fiber gratings
Author(s) -
YoungGeun Han,
Sang Hyuck Kim,
Sang Bae Lee
Publication year - 2004
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.12.001902
Subject(s) - band pass filter , optics , materials science , bandwidth (computing) , long period fiber grating , optical filter , fiber bragg grating , filter (signal processing) , optical fiber , optoelectronics , dispersion shifted fiber , fiber optic sensor , physics , telecommunications , computer science , electrical engineering , engineering
The voltage-controllable multichannel filter based on multiply cascaded long-period fiber gratings with a divided coil heater will be proposed and experimentally demonstrated. It has several advantages of the large tuning range in both C- and L-band, multichannel operation, multiwavelength electivity, and bandwidth controllability. The tunable bandpass filter based on long-period fiber gratings ith the broad bandwidth over 6.5 nm, large tuning range over 30 nm, and excellent side mode suppression more than 40 dB will be also discussed.