Abstract: A mechanism for the heat sink to adhere to the transceiver inserted in the cage is disclosed. The heat sink provides a guide in the side thereof, while, the cage provides a slit in the side. A pair of elastic tabs is diagonally formed in the slit. The transceiver slides the heat sink rearward as the insertion thereof into the cage, then, the guide of the heat sink slips down the rear tab in the slit, which presses the heat sink downward to adhere to the transceiver. The heat conducting path from the transceiver to the heat sink is formed.

Abstract: An optical transceiver is disclosed, in which an optical subassembly may be assembled within a housing without degrading an optical coupling efficiency between a semiconductor optical device in the subassembly and an optical fiber in an external optical connected that is mated with the housing of the transceiver. The subassembly comprises a sleeve portion and a body portion that installs the optical device therein. The subassembly is assembled in the housing such that the sleeve portion thereof is put between the holder and the cover. The holder and the cover each provides a concave surface that comes in contact with the sleeve portion only by two lines in parallel to the optical axis of the subassembly when the sleeve portion is set within the concave surface.

Abstract: A bi-directional optical module with an improved arrangement of the PD and the LD is disclosed. The LD is mounted on the stem through the LD carrier and the metal block, while the PD is mounted on the stem through the PD carrier. The bottom level of the PD is lower than the top level of the metal block and the top level of the PD is lower than the top level of the LD carrier.

Abstract: The present invention is to provide an intelligent pluggable transceiver improving an EMI tolerance with a simple mechanism. The optical transceiver of the invention comprises upper and lower housings (11, 12), a holder (81), optical assemblies (51, 61), a cover (14), a substrate (15) and a grip (13). The optical assemblies are fixed with the upper and lower housings together with the holder with interposing the conductive elastic member. Although the rear end of the substrate exposes outside the transceiver, the shield gasket and the ground pattern on the substrate shields the contact portion between the substrate and the upper housing and between the substrate and the cover. Moreover, the grip and the latch lever installed in the lower housing, and the elastic piece realize the latching/releasing mechanism of the transceiver with the host system.

Abstract: The present invention provides an optical transceiver with a function of the wavelength division multiplexing. The transceiver includes a receiver optical unit, a transmitter optical units and a substrate. Both optical unit includes a plurality of receiver optical subassemblies (ROSAs) or a plurality of transmitter optical subassemblies (TOSAs) and a plurality of wavelength selective filters. The ROSAs or the TOSAs in respective optical units is electrically connected with the circuit on the substrate by the flexible printed circuit (FPC) board with a plurality of branches, each connected to the ROSAs or the TOSAs, and a connecting portion fixed to the substrate.

Abstract: The pluggable optical transceiver of the present invention provides a tailed finger that comes in contact with the inner surface of the cage by pushing outward by the optical connector when the optical connector mates with the optical receptacle. While, when the optical receptacle of the transceiver is free from the optical connector, the tailed finger protrudes into the optical receptacle and no influence is affected to insert the transceiver into or to extract the transceiver from the cage.

Abstract: An optical transceiver is disclosed, in which an optical subassembly maybe assembled within a housing without degrading an optical coupling efficiency between a semiconductor optical device in the subassembly and an optical fiver in an external optical connected that is mated with the housing of the transceiver. The subassembly comprises a sleeve portion and a body portion that installs the optical device therein. The subassembly is assembled in the housing such that the sleeve portion thereof is put between the holder and the cover. The holder and the cover each provides a concave surface that comes in contact with the sleeve portion only by two lines in parallel to the optical axis of the subassembly when the sleeve portion is set within the concave surface.

Abstract: A heat dissipating mechanism from an optical assembly to housing without stressing the assembly against the housing is disclosed. The optical assembly has a box-shaped portion to install the optical device and the heat generating device. Among six walls of the box-shaped portion, rear and one side wall are provided for the signal transmission, and two side walls continuous to each other are provided for the heat conduction. The housing forms a hollow within which the optical assembly is set such that the two side walls of the optical assembly come in thermally contact with the bottom and one side wall of the hollow.

Abstract: 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.

Abstract: The present invention is to provide an intelligent pluggable transceiver improving an EMI tolerance with a simple mechanism. The optical transceiver of the invention comprises upper and lower housings (11, 12), a holder (81), optical assemblies (51, 61), a cover (14), a substrate (15) and a grip (13). The optical assemblies are fixed with the upper and lower housings together with the holder with interposing the conductive elastic member. Although the rear end of the substrate exposes outside the transceiver, the shield gasket and the ground pattern on the substrate shields the contact portion between the substrate and the upper housing and between the substrate and the cover. Moreover, the grip and the latch lever installed in the lower housing, and the elastic piece realize the latching/releasing mechanism of the transceiver with the host system.

Abstract: A pluggable optical transceiver is disclosed in which, even an irregular operation is carried out, the engagement between the transceiver and the rail may be secured. The optical transceiver, which is pluggable with the rail provided in the host system, includes a grip assembled with the receptacle, a latch lever to be engaged with the rail, a leaf spring that pushes the latch lever outward and an actuator to make a seesaw motion to rotate the latch lever synchronizing with the slide of the grip. Because the center of the rotation center of the latch lever positions inward with respect to the end of the latch lever, the engagement of the latch lever with the rail may be further secured even the irregular operating is applied in the latch lever.

Abstract: An optical transceiver according to the present invention is a pluggable transceiver to be inserted into a cage of the host system. To release the latching mechanism with the cage, the present transceiver has a bail, a resin-made receptacle member, and a resin-made actuator. The receptacle member attaches the bail in a pivotable arrangement. The bail has a cam to convert its rotation into a seesaw motion of the actuator. The actuator provides a hook in one end thereof, and the seesaw motion of the actuator pulls this hook within the transceiver. Thus, the latching between the transceiver and the cage may be released.

Abstract: The present invention is to provide an intelligent pluggable transceiver improving an EMI tolerance with a simple mechanism. The optical transceiver of the invention comprises upper and lower housings (11, 12), a holder (81), optical assemblies (51, 61), a cover (14), a substrate (15) and a grip (13). The optical assemblies are fixed with the upper and lower housings together with the holder with interposing the conductive elastic member. Although the rear end of the substrate exposes outside the transceiver, the shield bracket and the ground pattern on the substrate shields the contact portion between the substrate and the upper housing and between the substrate and the cover. Moreover, the grip and the latch lever installed in the lower housing, and the elastic piece realize the latching/releasing mechanism of the transceiver with the host system.

Abstract: The optical pluggable transceiver according to the present invention has features of a good heat dissipating function with a simplified configuration thereby reducing the cost of not only the component used but also the process itself. The transceiver of the present invention comprises a resin frame, an optical subassembly, a electronic substrate, both mounted on the frame, a heat dissipating member, made of metal, for conducting and radiating heat generated by the electronic circuit on the substrate, and a metal cover for putting these frame, subassembly, substrate, and heat dissipating member therein. A greater part of the surface of the heat dissipating member exposes from the cover, accordingly, the efficiency for radiating heat may be improved. Moreover, these members of the frame, the optical subassembly, the substrate, the heat dissipating member, and the cover are assembled only by fitting without screwing or gluing.

Abstract: The pluggable optical transceiver of the present invention provides a tailed finger that comes in contact with the inner surface of the cage by pushing outward by the optical connector when the optical connector mates with the optical receptacle. While, when the optical receptacle of the transceiver is free from the optical connector, the tailed finger protrudes into the optical receptacle and no influence is affected to insert the transceiver into or to extract the transceiver from the cage.

Abstract: The present invention is to provide an intelligent pluggable transceiver improving an EMI tolerance with a simple mechanism. The optical transceiver of the invention comprises upper and lower housings (11, 12), a holder (81), optical assemblies (51, 61), a cover (14), a substrate (15) and a grip (13). The optical assemblies are fixed with the upper and lower housings together with the holder with interposing the conductive elastic member. Although the rear end of the substrate exposes outside the transceiver, the shield bracket and the ground pattern on the substrate shields the contact portion between the substrate and the upper housing and between the substrate and the cover. Moreover, the grip and the latch lever installed in the lower housing, and the elastic piece realize the latching/releasing mechanism of the transceiver with the host system.

Abstract: Disclosed herein is an intelligent pluggable transceiver improving an EMI tolerance with a simple mechanism. The optical transceiver includes upper and lower housings, a holder, optical assemblies, a cover, a substrate and a grip. The optical assemblies are fixed with the upper and lower housings together with the holder with interposing the conductive elastic member. Although the rear end of the substrate is exposed outside the transceiver, the shield bracket and the ground pattern on the substrate shields the contact portion between the substrate and the upper housing and between the substrate and the cover. Moreover, the grip and the latch lever installed in the lower housing, and the elastic piece realize the latching/releasing mechanism of the transceiver with the host system.

Abstract: The present invention is to provide an intelligent pluggable transceiver improving EMI tolerance with a simple mechanism. The optical transceiver of the invention includes upper and lower housings, a holder, optical assemblies, a cover, a substrate and a grip. The optical assemblies are fixed with the upper and lower housings together with the holder by interposing a conductive elastic member. Although the rear end of the substrate is exposed outside of the transceiver, the shield gasket and the ground pattern on the substrate shield the contact portion between the substrate and the upper housing, and between the substrate and the cover. Moreover, the grip and the latch lever installed in the lower housing, and the elastic piece realize the latching/releasing mechanism of the transceiver with the host system.

Abstract: The present invention is to provide an intelligent pluggable transceiver improving an EMI tolerance with a simple mechanism. The optical transceiver of the invention comprises upper and lower housings (11, 12), a holder (81), optical assemblies (51, 61), a cover (14), a substrate (15) and a grip (13). The optical assemblies are fixed with the upper and lower housings together with the holder with interposing the conductive elastic member. Although the rear end of the substrate exposes outside the transceiver, the shield gasket and the ground pattern on the substrate shields the contact portion between the substrate and the upper housing and between the substrate and the cover. Moreover, the grip and the latch lever installed in the lower housing, and the elastic piece realize the latching/releasing mechanism of the transceiver with the host system.

Abstract: An optical transceiver according to the present invention is a pluggable transceiver to be inserted into a cage of the host system. To release the latching mechanism with the cage, the present transceiver has a bail, a resin-made receptacle member, and a resin-made actuator. The receptacle member attaches the bail in a pivotable arrangement. The bail has a cam to convert its rotation into a seesaw motion of the actuator. The actuator provides a hook in one end thereof, and the seesaw motion of the actuator pulls this hook within the transceiver. Thus, the latching between the transceiver and the cage may be released.