| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem in which there is an optical fiber coupler which has improper adhesion specifications and is low in reliability. SOLUTION: An optical fiber coupler is constituted by fusing and drawing core parts 1 and 2 of a plurality of optical fibers 10 and 20 having their coatings removed and joining them on a substrate 5 with adhesives 6 and 7. Tensile shearing adhesive strength of the adhesives is≥5 MPa and their total coating volume is 0.36 to 5.6 mm<SP>3</SP>. COPYRIGHT: (C)2005,JPO&NCIPI |
