title: Thermal tuning of mechanically induced long-period fiber grating.
abstract: We have developed a wideband tunable optical filter that uses a long-period fiber grating (LPFG) in which both resonance wavelength and its signal attenuation can be adjusted. We create the grating mechanically by pressing a spring coil to an optical fiber. We achieve continuous fine tuning of wavelength and attenuation by varying the temperature of the LPFG. The adjustable ranges of the LPFG are more than 200 nm in resonance wavelength and more than 10 dB in signal attenuation.
authors.affiliation: Faculty of Engineering, Kagawa University, 2217-20 Hayashi-cho, Takamatsu, Kagawa, 761-0396 Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Yokouchi
authors.forename: Yoshifumi
authors.initials: Y
authors.lastname: Suzaki
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Nakagawa
authors.forename: Makoto
authors.initials: M
authors.lastname: Yamauchi
authors.forename: Masanori
authors.initials: M
authors.lastname: Kimura
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Mizutani
authors.forename: Susumu
authors.initials: S
authors.lastname: Kimura
authors.forename: Seiki
authors.initials: S
authors.lastname: Ejima