Sumitomo Electric Industries, Limited

Sumitomo Electric Device Innovations, Inc.

Hidemi Sone

Hiromi Kurashima

Satoshi Yoshikawa

Manabu Ishikawa

Masato Hino

Yuuichi Kitajima

Toru Ukai

Yuko Takeuchi

The optical transceiver includes a case that has a second engagement portion engaging with a first engagement portion provided in the cage to prevent the optical transceiver from being ejected from the cage, a slider that moves relative to the case in the first direction with respect to the case, and a pusher that is oscillatably supported by the case via an oscillation shaft extending in a second direction and disengages the first engagement portion and the second engagement portion from each other by pushing the first engagement portion in a third direction while being interlocked with a movement of the slider. The oscillation shaft is positioned in an ejecting direction with respect to an interlocking part of the slider and the pusher.

Optical transceiver and optical transceiver insertion/ejection mechanism

An optical transceiver having a bi-directional optical subassembly (BOSA) and a twin optical port is disclosed. The BOSA is installed with respect to one of the twin port, and a plug is plugged within the other of the twin port. The plug, which is made of resin material, is rigidly set in the other of the twin port and reliably prohibited from slipping out from the port.

Optical transceiver with plug in one of paired optical ports

An optical transceiver provides a TOSA, a ROSA, a base member, a circuit board and a shield member. The shield member is formed by cutting and bending a metal sheet without welding or soldering. The shield member includes a center partition and a pair of sides, which forms two spaces each receiving the TOSA or the ROSA. The center partition has a V-shaped cross section which is able to be inserted into a cut of the circuit board so as to shield the ROSA from the TOSA. The shield member provides a frame ground by being in the bottom of the center partition in contact with the base member and also in contact with the cover.

Optical transceiver with a shield member between two OSAS

An optical module that implements with a tri-plexer assembly is disclosed. The tri-plexer module comprises a bi-directional module for transmitting digital input and output signals and an analogue optical assembly for receiving analog optical signals. The bi-directional module installs both a light-emitting device and a light-receiving device in a signal package. The analogue optical assembly is assembled such that the optical axis thereof makes a substantially right angle with the optical axis of the bi-directional module. The signal ground of the module is common to the analogue module and to a section for receiving the digital data; while, the chassis ground or the frame ground in the module is isolated from the signal ground.

Optical module implemented with tri-plexer optical subassembly

An optical transceiver is disclosed, in which the transceiver installs a BOSA and has an additional heat conducting path from the BOSA to the cover and to the base independent of the path from the IC to the cover. The optical transceiver includes a heat conductor that comes in thermally contact with the BOSA, the cover and the base. The heat conductor, which is made of metal sheet, has a ceiling piece that comes in contact with the cover and a pair of legs with the bottom surface that comes in contact with the base in both sides of the BOSA.

Pluggable transceiver with bi-directional optical sub-assembly

The specification discloses an optical transceiver that provides a FPC board to electrically connect the OSA with the circuit board. The FPC board provides pads to be connected with corresponding pads formed on the circuit board and at least one opening in adjacent to the pads. In the present invention, the shape and the position of the opening fit with the outer shape and the position of a corresponding electrical component mounted on the circuit board. By mating the opening in the FPC board with the component on the circuit board, the pads on the FPC board may be aligned with pads on the circuit board.

Optical transceiver with an FPC board connecting an optical subassembly with a circuit board

The optical transceiver of the present invention is one type of the pluggable transceiver that is inserted into/extracted from the cage in the host system. The transceiver includes the OSA (Optical Sub-Assembly) unit, which shows the optical function, and the body unit installing the electronic circuit. The OSA unit includes the receptacle member, the tab plate and transmitting/receiving sub-assemblies. The body unit includes the base installing the circuit board, the heat conducting plate to conduct heat generated by the IC on the substrate to the rear end of the transceiver, the supplementary substrate, the supporting plate, and the cover for putting these components therein. In the present transceiver, the heat is effectively conducted to the rear end thereof the heat conducting plate, besides, the tab plate, the heat conducting plate, and the supporting plate are made only by cutting, bending and tapping without any welding and gluing. Therefore, the present invention may provide an optical pluggable transceiver with superior heat dissipating function by cost saved configuration.

Heat dissipating mechanism of a pluggable optical transceiver

The present invention provides a coupling mechanism between the optical subassembly and the circuit board using the FPC board. The mechanism according to the present invention may release the mechanical stress induced in the root portion of the lead pin of the optical subassembly and shows a superior productivity. The optical assembly provides a plurality of lead pins arranged in at least two rows. The FPC board bent in the U-shape is put between rows and soldered to the lead pins in the pads thereof. One piece of the FPC board is extended to the circuit board and soldered thereto.

Growing community of inventors

Yokohama, Japan

Hidemi Sone