Limitations of Superimposed Fiber Bragg Grating
Keisuke NAKAYAMA, Ryuji IKEBE, Kenji SAKAMOTO, Jun-pei MOHRI, Hiroki MIZOBUCHI, Makoto YAMAUCHI, Eiji IZUMIKAWA, Yasuo MIZUTANI, Takashi YOKOUCHI, Hiromu IWATA, Yoshifumi SUZAKI and Seiki EJIMA
Abstract:The authors demonstrate the inscription of several Bragg gratings at the same location of a photosensitive fiber. This superimposed Bragg grating was fabricated by two-beam interference method using UV laser light. Effects due to the inscription of multiple gratings at the same location of the fiber such as changes of reflectivity and shift of wavelength are studied. Key Words:Superimposed fiber gratings, Fiber Bragg gratings, Two-beam interference method