Title :
Loss Tunable Long-Period Fiber Gratings Controlled by Electromagnet
Author :
Sakata, Hajime ; Numano, Tomoyoshi ; Tomiki, Masahiro
Author_Institution :
Dept. of Electr. & Electron. Eng., Shizuoka Univ., Hamamatsu, Japan
Abstract :
We present microbend long-period fiber gratings that can be used as electrically loss-tunable band-rejection filters. The tunability of wavelength-selective loss is based on variable perturbation of the fiber induced by an electromagnet in combination with a steel coil spring. A dynamic loss amplitude of 11 dB is obtained and the response time measured is 16-18 ms.
Keywords :
Bragg gratings; electromagnets; optical control; optical fibre filters; optical fibre losses; optical tuning; dynamic loss amplitude; electrically loss-tunable band-rejection filters; electromagnet; loss tunable long-period fiber gratings; microbend long-period fiber gratings; response time; steel coil spring; variable perturbation; wavelength-selective loss; Coils; Electromagnets; Fiber gratings; Gratings; Optical fiber sensors; Springs; Electromagnet; long-period gratings; microbending; optical fiber filters;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2212182
