Title :
Tunable wavelength filter using a Bragg grating fiber thinned by plasma etching
Author :
Kumazaki, H. ; Yamada, Y. ; Nakamura, H. ; Inaba, S. ; Hane, K.
Author_Institution :
Gifu Nat. Coll. of Technol., Japan
Abstract :
We studied a tunable wavelength filter using a single-mode fiber Bragg grating with a cladding thinned by reactive plasma etching. Reflection wavelength shifts were demonstrated by controlling the effective refractive index or the period of the grating. When liquid paraffin was used for additional cladding on a thinned grating fiber of 19-μm diameter, the shift rate of 0.055 nm//spl deg/C was obtained. In the case of applying the tension to the grating region, the shift rate was 3.4 nm/100 V for the fiber of 41-μm diameter.
Keywords :
Bragg gratings; optical fibre cladding; optical fibre fabrication; optical fibre filters; optical tuning; refractive index; sputter etching; 19 mum; 41 mum; Bragg grating fiber; effective refractive index; grating region; liquid paraffin; plasma etching; reactive plasma etching; reflection wavelength shifts; shift rate; single-mode fiber Bragg grating; thinned grating fiber; tunable wavelength filter; Bragg gratings; Fiber gratings; Optical fiber communication; Optical fiber filters; Optical fiber networks; Optical fibers; Plasma applications; Plasma waves; Wavelength division multiplexing; Wet etching;
Journal_Title :
Photonics Technology Letters, IEEE
