Title :
A wavelength- and loss-tunable band-rejection filter based on corrugated long-period fiber grating
Author :
Lin, C.Y. ; Wang, Lon A.
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
4/1/2001 12:00:00 AM
Abstract :
We demonstrate a long-period fiber grating composed of an etched corrugated structure that can be used as a wavelength- and loss-tunable band-rejection filter. The tunabilities are based on the index modulation capable of being varied in the corrugated structure under externally applied mechanical forces. The new type of fiber filter enables wavelength and loss tuning ranges of more than 30 nm and 25 dB by adjusting the applied amounts of torsion and tensile forces, respectively.
Keywords :
diffraction gratings; optical fibre fabrication; optical fibre filters; optical fibre losses; optical tuning; tensile strength; torsion; corrugated long-period fiber grating; corrugated structure; etched corrugated structure; externally applied mechanical force; fiber filter; index modulation; loss tuning; loss-tunable band-rejection filter; tensile forces; torsion forces; wavelength tuning; wavelength-tunable band-rejection filter; Capacitive sensors; Equalizers; Etching; Fiber gratings; Optical control; Optical fiber amplifiers; Optical fiber filters; Optical fibers; Resonance; Tensile strain;
Journal_Title :
Photonics Technology Letters, IEEE
