Abstract: A connector plug has a connector plug body, a slider supported on the connector plug body and a jig attachable to the slider. The jig has an insertion portion which can be inserted into a slot of the slider and an operation portion extended from the insertion portion. The insertion portion has first and second insertion portions separated from each other by a predetermined distance. The slider can be moved in the detaching direction when the jig is moved in the detaching direction in a state that a first locking portion of the first insertion portion and a second locking portion of the second insertion portion are locked to the inner wall of the slot, and the locked state of the first locking portion and the second locking portion can be released when a force is applied to the operation portion in an inside direction to shorten the predetermined distance.

Abstract: A connector plug has a connector plug body, a slider supported on the connector plug body and a jig attachable to the slider. The jig has an insertion portion which can be inserted into a slot of the slider and an operation portion extended from the insertion portion. The insertion portion has first and second insertion portions separated from each other by a predetermined distance. The slider can be moved in the detaching direction when the jig is moved in the detaching direction in a state that a first locking portion of the first insertion portion and a second locking portion of the second insertion portion are locked to the inner wall of the slot, and the locked state of the first locking portion and the second locking portion can be released when a force is applied to the operation portion in an inside direction to shorten the predetermined distance.

Abstract: An optical fiber ferrule assembly is equipped with an angular index for indicating a polarization plane of an optical fiber. The assembly includes a polarization plane maintaining optical fiber, an optical fiber ferrule for accommodating the optical fiber so that the optical fiber is fixed thereto in a state that a tip end surface of the optical fiber is exposed, and an angular index member. The angular index member is rotatable with respect to the ferrule. The optical fiber is fixed to the optical fiber ferrule and the angular index member and the optical fiber ferrule are temporarily assembled. Then the tip end surface of the optical fiber is enlarged for observation to decide the polarization plane thereof on the basis of its configuration, and the angular index member and the optical fiber ferrule are relatively rotated. They are then fixed to each other so that the angular index makes a predetermined angle relative to the polarization plane.

Abstract: An optical fiber termination device wherein temperature rise is minimized when light power is high or a power laser is used therewith. A first optical fiber is connected to a second optical fiber by fusing the core of the first optical fiber to the clad of the second optical fiber with a discharge generated between electrodes. The first optical fiber is inserted into a hole at the center of a ferrule and then the first optical fiber is fastened to the ferrule by fusing them. Thereafter, the edge surface of the ferrule is finished by polishing it. The second optical fiber is covered with a protective cover. Light coming from the core of the first optical fiber is incident on and scattered into the clad of the optical fiber. The light reflected toward the light source is greatly decreased by this structure.