| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical fiber coupling method and a device for local signals to improve the incidence/emission efficiency of signal light on the side face of an optical fiber. SOLUTION: In the optical fiber coupling method for local signals, a first optical fiber 4 and a second optical fiber 7 are optically connected by successively executing: a first procedure (Fig.1(a)) of stretching the first optical fiber 4 so that the core diameter of the coupling part 6 of the first optical fiber 4 may become smaller than the core diameter of other parts; a second procedure (Fig.1(b)) of bending the coupling part 6 of the first optical fiber 4 in an arc shape and bringing the end face 7a of the second optical fiber 7 closer to the coupling part 6 from the roughly tangential direction of the center of the coupling part 6; and a third procedure (Fig.1(c)) of applying a refractive index matching agent 8 roughly equal to the refractive index of the clad of the first optical fiber 4 to the range from the coupling part 6 of the first optical fiber 4 to the end face 7a of the second optical fiber 7. COPYRIGHT: (C)2011,JPO&INPIT |
