Kyocera Corporation

Toshihiro Takimoto

Mikio Kyomasu

Toshimichi Yasuda

Takayoshi Morooka

Hideto Sonoda

Hiroshi Hashimoto

Sadaaki Minamimoto

Akira Kashiwazaki

An optical device having: an optical fiber body; a ferrule which surrounds the above described optical fiber body and to which a recess that crosses a coreless fiber within the above described optical fiber has been provided; and an optical element which is provided within the recess in said ferrule, is provided with a protective member for protecting the above described recess, and the protective member has a restriction means for physically restricting the rotation of the optical device around the optical axis.

Optical device

To provide a fabricating method of an optical communication part in which an optical element is fixed within a hollow holder, including the step of fixing an optical element by holding the optical element in a hollow portion of a holding portion of a metal made holder and calking a portion of the holder; wherein, the step includes calking the holder by heating the holder to a temperature higher than a operating temperature or cooling the holder to a temperature lower than the operating temperature depending on whether or not a thermal expansion coefficient of the holder is larger or smaller than that of the optical element. When the thermal expansion coefficient of the holder is larger than that of the optical element, and a heating temperature in calking is set within the range of 85&deg; C. to 95&deg; C., while when the thermal expansion coefficient of the holder is larger than that of the optical element the cooling temperature of the holder upon the calking is set within the range of &minus;50&deg; C. to &minus;40&deg; C.

Optical communication part and method of fabricating the same

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Kitami, Japan

Toshihiro Takimoto