A simple method to mechanically induce a long-period fiber grating (LPFG) by a grooved plate is improved. The transmission spectra of a grating under different pressures and other types of gratings are experimentally investigated. This method is simple and reconfigurable and offers large spectra tunability. This type of LPFG has potential applications in gain flattening in erbium-doped fiber amplifiers (EDFA) and will be of particular use in filter design.
© 2005 Chinese Optics Letters
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.2770) Diffraction and gratings : Gratings
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2340) Fiber optics and optical communications : Fiber optics components
(350.2460) Other areas of optics : Filters, interference
Kai Chen, Qiuqing Sheng, Chunfeng Ge, Xiaoyi Dong, Jun Han, and Shengping Chen, "Several mechanically-induced long-period gratings by a grooved plate," Chin. Opt. Lett. 1, 444-446 (2003)