Title :
Group delay control of super-imposed fiber gratings using a two-column system mounted on a rotatable disk
Author :
Chung, Seunghwan ; Kwon, Jaejoong ; Baek, Seungin ; Lee, Byoungho
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
A novel method for dispersion control of a fiber grating is proposed and experimentally demonstrated. A super-imposed fiber Bragg grating (SFBG) is attached on an elastic plate and wound around two columns, which are rotated on a disk. The system induces strain gradient for chirping that can be controlled by the rotation of the disk. The central reflection wavelength can be either maintained or changed by controlling the position of the grating with respect to the two columns. Various group delay curves can be obtained by altering the shape of the plate on which the SFBG is attached. In addition, the proposed device can also be used as a broad-band tunable filter in optical communication systems.
Keywords :
Bragg gratings; chirp modulation; compensation; optical communication equipment; optical fibre dispersion; optical fibre filters; wavelength division multiplexing; broad-band tunable filter; central reflection wavelength; chirped fiber grating; dispersion compensation; dispersion control; elastic plate; fiber Bragg grating; group delay control; multiple WDM channels; optical communication; rotatable disk; strain gradient; superimposed fiber gratings; two-column system; Capacitive sensors; Centralized control; Chirp; Communication system control; Control systems; Delay; Fiber gratings; Optical reflection; Strain control; Wounds;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.819396
