Loss Tunable Long-Period Fiber Gratings Controlled by Electromagnet
- Resource Type
- Periodical
- Authors
- Sakata, H.; Numano, T.; Tomiki, M.
- Source
- IEEE Photonics Technology Letters IEEE Photon. Technol. Lett. Photonics Technology Letters, IEEE. 24(19):1680-1682 Oct, 2012
- Subject
- Engineered Materials, Dielectrics and Plasmas
Photonics and Electrooptics
Electromagnets
Optical fiber sensors
Coils
Springs
Fiber gratings
Gratings
Electromagnet
long-period gratings
microbending
optical fiber filters
- Language
- ISSN
- 1041-1135
1941-0174
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.