LIGHT EMITTING COMPOSITE PARTS FOR OPTICAL COMMUNICATION

摘要

PROBLEM TO BE SOLVED: To provide all-purpose light emitting parts for optical communication having good emission efficiency of signal light and little connection loss and to provide a low-cost and high-quality transmitter which permits popularization of optical communication. SOLUTION: A connector having a soft light-transmitting material attached to the passage of light in the connecting part is integrated with a light emitting device to form a tightly adhered structure between the light emitting face of the light emitting device and the soft light-transmitting material. The light guide of the light emitting device is surrounded by a reflection face and tapered to the direction to the light emitting element and the end face of the light guide is joined with the light emitting part of the light emitting element. The connector has such a structure that the passage of light of the connector is surrounded by a reflection face and has a parallel or tapered form to the light emitting device and that the structure has a holding mechanism to press the optical fiber to bring the fiber tightly in contact with the light transmitting material. The light transmitting material has 1.30 to 1.60 refractive index and <=60 degrees hardness according to JIS (type D). The light guide of the light emitting device is sealed with a transparent material (having 1.30 to 1.60 refractive index and <=70 degrees hardness according to JIS (type A)).