Sumitomo Osaka Cement Co., Ltd.

Sumitomo Cement Co., Ltd.

Nobuhide Miyamoto

Hirotoshi Nagata

Ryosuke Kaizu

Susumu Murata

Masaru Shiroishi

Tsutomu Saito

Takashi Tateyama

Mithuru Sakuma

Makoto Shimada

Naoki Kougo

An optical element-optical fiber composite structure having a high resistance of the optical fiber to breakage due to cyclical change in temperature, includes a package structure having a main container, side containers attached to the main container and sleeves through which a main chamber of the main container is connected to side chambers of the side containers; an optical element housed in the main chamber; and optical fibers introduced into the main chamber through the side chambers and the sleeves and connected to the optical element.

Package structure for optical element and fibers and composite structure

A jacket layer of a jacketed optical fiber is cut by a cutting method and apparatus in which (A) a terminal portion of a jacketed optical fiber is straightened and grasped by a fiber holder, and (B) a blade device having (a) a pair of cutting blades and (b) a blade holder in which device cutting edges of the blades are arranged in such a manner that the edges are opposite to each other through a gap left therebetween and are on one and the same plane, the straightened portion of the jacketed optical fiber extends at a substantially right angle to the plane, and a center line of the gap between the cutting edges intersects an axis of the straightened portion of the jacketed optical fiber, and is moved in at least one direction at a substantially right angle to the axis of the straightened portion of the jacketed optical fiber to cut the secondary coating layer at a depth equal to or larger than the thickness of the secondary coating layer but smaller than the total thickness of the primary and secondary coating layers.

Cutting method and apparatus for removing a secondary coating layer from

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Funabashi, Japan

Nobuhide Miyamoto