Abstract
We have developed a new type of all-fiber band-rejection filter consisting of a helicoidal long-period fiber grating pair of opposite helicities, which provides highly flexible spectral control over the rejection bandwidth. The detailed fabrication method and operation principles of the proposed bandwidth-tunable band-rejection filter are described. The proposed device enables unique rejection bandwidth tuning over more than at the rejection level of , with low insertion loss and polarization-dependent loss achieved by adjusting torsion stress.
© 2007 Optical Society of America
Full Article | PDF ArticleMore Like This
T. Zhu, C. H. Shi, Y. J. Rao, L. L. Shi, and K. S. Chiang
Opt. Express 17(19) 16750-16755 (2009)
Honggu Choi, Yoonseob Jeong, and Kyunghwan Oh
Opt. Lett. 36(4) 484-486 (2011)
I. Torres-Gómez, A. Martínez-Ríos, D. E. Ceballos-Herrera, E. Mejía-Beltrán, and R. Selvas-Aguilar
Opt. Lett. 32(23) 3385-3387 (2007)