Abstract: A connector plug can be removably snap-fitted into the adapter which has a cavity into which the connector plug is inserted and a hole for locking the connector plug. The connector plug has: an optical fiber; a ferrule; housing; an elastic engagement piece with an projecting engagement portion and a projecting press portion, the engagement portion being adapted to snap into the hole of the adapter and become locked there when the connector plug is inserted into the adapter; and a stopper for locking the elastic engagement piece from being pressed. A height of the projecting press portion is set almost flush with a surface of the housing of the adapter, or is set almost equal to the height of the receptor portion of the adapter. Therefore, the connector plug can easily be connected to and disconnected from the adapter and its connection with the adapter is not easily broken.

Abstract: An optical waveguide component includes an optical waveguide chip formed with an optical waveguide, first and second connecting end members mounted on opposite end portions of the waveguide chip, housings for protecting the waveguide chip, and first and second receptacles mounted to end faces of the housings. When optical connector plugs are inserted into connector-plug accommodation holes of the first and second receptacles, the connector plugs are adequately positioned in the connector-plug accommodation holes by means of a guiding function of these holes, so that guide pins projecting from tip end faces of the connecting end members are fitted into guide-pin accommodation holes formed in the connector plugs, whereby optical fibers held by the connector plugs and the waveguide of the waveguide component are connected accurately and easily.

Abstract: Development of a multiple-core optical connector which can make multiple-core or a plurality of optical fibers connected in a simple manner has been sought. There are provided an optical connector ferrule for internally fixing beforehand the optical fibers arranged in parallel on an identical plane and having joining end surface of a tip which is polished, and an optical connector which is furnished with a connecting mechanism for maintaining a connected state by holding aforementioned optical connector which protrudes from the rear end, facing the aforementioned joining end surface of the aforementioned connector ferrule and a separate optical fiber connected by abutting against the optical fiber of the optical connector ferrule side.

Abstract: A cleaning tool includes a support substrate, a cleaning member, a shaft member where the cleaning member is connected to one end of the shaft member detachably, and support member mounted to the a support substrate for supporting the one end of the shaft member with the cleaning member so that the shaft member and cleaning member are oscillated freely in a direction which intersects perpendicularly to an axial direction of the shaft member. The cleaning tool may be used to clean an end surface of a ferrule of the optical connector.

Abstract: The backplane connector of the present invention can improve the fitting accuracy of the optical connectors A and B at the backplane 1 side and the package 2 side respectively and protect the backplane 1 from damages caused by being pressed against the first housing 3 when the first housing 3 is fit in the backplane 1. In the first housing 3 mounted floating in the backplane 1 is housed the second housing 7 by latching and connecting the latching projection 4 to the latching pawl 10, the backplane side optical connector plug 14 is incorporated in the second housing 7. And, the package side optical connector plug 23 is incorporated in the third housing 18 of the package 2. Then, the third housing 18 is inserted in the first housing 3, and the unlatching part 20 at the third housing 18 side presses down the tip side slope 13 of the latching pawl 10 to unlatch and disconnect the latching pawl 10 from the latching projection 4.