Patent ID: 7048449

Claim:
An optical receptacle for use in an optical sub-assembly, comprising: a generally tubular housing; a junction member fixed inside said housing, said junction member having a mating end which is accessible from one end of the housing, and a back end which is protected within the housing; a junction waveguide in said junction member, said junction waveguide having a mating end face at the mating end of the junction member and a protected back end face at the back end of the junction member; and a converging lens arranged within the housing at the back end of the junction member, said converging lens being aligned with the longitudinal axis of the junction waveguide, and said converging lens defining an optical path between the back end of the junction waveguide and a collimated expanded light beam outside the receptacle, wherein the optical receptacle comprises: a resilient sleeve located in and retained by said housing, said resilient sleeve clamped around said junction member and projecting away from the mating end thereof to form a receiving portion, said receiving portion being adapted to receive a mating ferrule, and to align and bring into optical contact a fiber fitted in the mating ferrule in physical contact with the mating end face in the junction waveguide.