| 摘要 |
PROBLEM TO BE SOLVED: To provide a fixing structure for optical fiber grating hardly varying characteristics against environmental changes. SOLUTION: On a fixing member composed of a base made of a material of a small coefficient of thermal expansion, and a 1st beam 2 and a 2nd beam 3 fixed to opposing sides 1a, 1a of the base 1 and made of a material of a large coefficient of thermal expansion, an optical fiber grating with a grating part 4d formed in a bare optical fiber part 4c which is a partly stripped connection part 4b is fixed with an adhesive 5 on the 1st beam 2 and the 2nd beam 3 on both sides of the grating part 4d of the bare optical fiber part 4c, and thus, an optical fiber grating is fixedly structured. |
