| 摘要 |
PROBLEM TO BE SOLVED: To form an optical waveguide having branches in a self-forming manner. SOLUTION: From a laser light source not shown, a laser beam 2 is converged by a lens 3 and guided to the incident end 10 of an optical fiber 1. With an LP<SB>11</SB>mode made to be emitted from an exiting end 11, dual-peak type light intensity peaks are arranged horizontally (1.A). Slide glass 4 covered with a gelatinized photosetting resin 5 film is disposed in the horizontal direction (1.B). When a laser beam of the LP<SB>11</SB>mode is emitted from the exiting end 11 of the optical fiber 1, a line of linear hardened object 61 starts forming (1.C). Now, with a lapse of time, a branch part 62 is formed at a position of a distance L from the exiting end 11 of the optical fiber 1, with growth followed in the form of two columnar hardened objects 63a, 63b. The two columnar hardened objects 63a, 63b are linear branches, wherein the angle formed thereby is about 4°. Thus, the optical waveguide 60 is formed comprising the hardened objects 61, 62, 63a, 63b (1.D). COPYRIGHT: (C)2007,JPO&INPIT |
