Patent ID: 8155495

Claim:
An assembly of an optical fiber and an optical fiber holder for holding the optical fiber, said optical fiber having an end surface formed at an end portion thereof, said end surface being configured to perform light coupling with a light emitting element or with a light receiving element mounted on a receptacle, wherein: said optical fiber holder comprises: a throughhole which extends through said optical fiber holder, and a recess that is positioned on a surface of said optical fiber holder, the surface facing the receptacle, wherein a bottom of the recess faces the receptacle and is provided with an opening of said throughhole, and wherein said optical fiber is inserted through said throughhole and an adhesive is filled in a gap between an inner wall of said throughhole and an outer periphery of said optical fiber, said adhesive being used for adhering said optical fiber to said optical fiber holder, and wherein said end portion, on which is formed said end surface of said optical fiber, protrudes from said opening and terminates within said recess.