The 1st process which satisfies inside the production mannered

摘要

PROBLEM TO BE SOLVED: To cure photo-curing resin so as to not cause bias of stress, and to form a clad in a self-forming optical waveguide manufacturing method.;SOLUTION: Light from an optical fiber 11 is made incident into a core 17 self-formed by curing a first photo-curing resin 13, and the clad 20 is formed by curing a second photo-curing resin 18 around the core 17 by leaking light from the core 17. To increase light intensity of the leaking light, a condensing lens 19 with NA larger than the numerical aperture of the optical fiber 11 is used when making light from a blue semiconductor laser 14 incident in the optical fiber 11. Since the second photo-curing resin 18 is symmetrically cured around the core 17, the bias of stress around the core 17 is prevented. As a result, loss of the optical waveguide is reduced.;COPYRIGHT: (C)2010,JPO&INPIT