Abstract: The latest 10 Gb/s optical transceivers include large heat sinks with heat dissipating fins or pins extending from an upper surface thereof, which can cause difficulties when the transceivers are passed through an opening of a faceplate onto the guide rail of a host device. Often the heat dissipating fins or pins will contact an edge of the faceplate opening causing a series of ratcheting impacts that can damage the fins or pins. Accordingly, the present invention provides a guide rail with a resilient arm extending therefrom comprised of a vertical section extending along the side of the transceiver and a horizontal section extending above the top of the heat sink, but below the edge of the faceplate. A lead-in section extends outwardly and upwardly from the horizontal section providing a camming surface for guiding the transceiver into position.

Abstract: These shielding gas flow-control devices avoid weld start quality problems often created in typical GMAW systems. They accomplished this while maintaining the common high pressure gas delivery pressures. Higher pressures maintain automatic flow compensation when gas restrictions occur while welding. A measured amount of extra shielding gas is quickly delivered at the weld start to displace air that enters the welding torch body and cable when welding is stopped. They also provide extra gas to purge the air in the weld start area. The extra gas is provided without excess gas flow velocity that, if present, causes air to be pulled into the shielding gas stream. These unique devices control gas flow while being located in, on or in close proximity to the wire feeder. A simple method of limiting gas flow adjustment is also included. These systems also minimize shielding gas waste which often occurs at the weld start.

Abstract: This device significantly reduces a major reason for shielding gas waste in MIG welding. When welding is stopped, excess gas is stored in the hose transporting shielding gas to the solenoid located in a welding system. At subsequent weld starts, this stored gas creates a high surge flow wasting gas. Prior methods employed to reduce gas waste at the weld start have been complex, subject to leaks, were not sufficiently robust for the environment, did not provide shielding gas savings for welds longer than 3 to 4 seconds, were useful for limited delivery hose lengths or reduced the self compensating flow features inherent in higher delivery pressure systems. The device includes a compact variable flow-control that is inserted in a shielding gas delivery hose at a predetermined distance from the solenoid end to reduce gas waste and provide a controlled amount of extra gas at the weld start.

Abstract: The invention relates to a bail latching device for an opto-electronic transceiver, including a pivotal latching member and a bail. The bail includes ends extending at an acute angle from a plane defined by the side arms for pivoting the latching member when the bail is rotated from a rest position to a removal position. Ideally, in the rest position, the side arms of the bail extend downwardly on each side of a front end of the transceiver. In the removal position, the bail is parallel to a removal direction, whereby the bail rotates the latching member to an unlatching position and then provides a handle to grasp while removing the transceiver from a standard cage.

Abstract: The invention relates to a latch device for a pluggable opto-electronic module, such as an optical transceiver, for locking the module in a rail or cage system of a host machine. The latest generation of optical transceivers include all metal housings, instead of all plastic or partial plastic, to ensure adequate heat dissipation. The relatively heavier housings necessitate the use of more robust latch devices. The latch device according to the present invention includes a sliding element with arms extending therefrom for pivoting a latching hook out of engagement with the rail or cage system. In a preferred embodiment, a pair of latching hooks are provided, one on each side of the module. The latching hooks are mounted on the ends of spring arms, which extend from the same sheet of spring metal positioned across the bottom of the housing.

Abstract: The invention relates to a bail latching device for an opto-electronic transceiver, including a pivotal latching member and a bail. The bail includes ends extending at an acute angle from a plane defined by the side arms for pivoting the latching member when the bail is rotated from a rest position to a removal position. Ideally, in the rest position, the side arms of the bail extend downwardly on each side of a front end of the transceiver. In the removal position, the bail is parallel to a removal direction, whereby the bail rotates the latching member to an unlatching position and then provides a handle to grasp while removing the transceiver from a standard cage.

Abstract: An optical coupler includes a first plate and a second plate superposed over the first plate. At least the second plate has at least one groove formed therein. The at least one groove extends continuously from one edge of the second plate to another edge of the second plate. An optical fiber is disposed in the at least one groove.

Abstract: The invention relates to a latch device for a pluggable opto-electronic module, such as an optical transceiver, for locking the module in a rail or cage system of a host machine. The latest generation of optical transceivers include all metal housings, instead of all plastic or partial plastic, to ensure adequate heat dissipation. The relatively heavier housings necessitate the use of more robust latch devices. The latch device according to the present invention includes a sliding element with arms extending therefrom for pivoting a latching hook out of engagement with the rail or cage system. In a preferred embodiment, a pair of latching hooks are provided, one on each side of the module. The latching hooks are mounted on the ends of spring arms, which extend from the same sheet of spring metal positioned across the bottom of the housing.

Abstract: An optical transceiver arrangement includes a retainer assembly. The retainer assembly includes at least one housing adapted to be coupled to a fiber optic cable, and at least one carrier assembly having a carrier, and a die chip attached to the carrier. The die chip has at least one active region. The optical transceiver arrangement further includes at least one optical coupler disposed within the housing for optically coupling the at least one active region to the fiber optic cable. The optical transceiver arrangement also includes a laminate assembly having the retainer assembly disposed thereon. The die chip is electrically coupled to the laminate assembly.

Abstract: In one aspect of the invention, an assembly includes an optical-electronic die having electrically conductive pads and a submount with first and second opposing sides and a third side essentially perpendicular to the first submount side. The first and third submount sides have an adjoining edge, with electrically conductive pads on the first submount side bonded to the die pads, second electrically conductive pads on the third side of the submount, and electrically conductive traces interconnecting the first and second submount pads. The conductive traces are formed on the first and third sides and adjoining edge of the submount by a process that uses a shadow mask.

Abstract: This device significantly reduces major reasons for shielding gas waste primarily in metal inert gas welding. Excess shielding gas stored at the end of each weld in the shielding gas delivery hose connecting the gas source to the welding machine creates a shielding gas flow-surge at the next weld start. This gas flow-surge creates shielding gas waste and can cause poor weld start performance. Other methods employed over the years to reduce shielding gas waste have been either complex, leaked, were not sufficiently robust for the environment, provided only partial solutions or did not provide shielding gas savings for welds longer than about 3 seconds. This device includes a delivery hose connecting the shielding gas supply to the welding machine, which has a small internal volume and a gas surge-restricting orifice at the gas solenoid end of the hose.

Abstract: A light blocking device for an optical transmitter includes a flap (46) that is movable to a first position in which light is allowed to pass unhindered from a laser (18), and is movable to a second position to block the light emitted from the laser. The light blocking device further includes a panel member (48) connectable to a housing (10) of the optical transmitter. The flap (46) is connected to an edge of the panel member (48).

Abstract: An optical coupler and housing arrangement includes a housing portion adapted to receive an optical connector of a fiber optic cable, and further includes an optical coupler portion integrally formed with the housing portion. The optical coupler portion is adapted to transmit optical signals to and from the fiber optic cable. The optical coupler portion has a plurality of optical fibers for transmitting the optical signals. Each of the optical fibers extends from one end surface of the optical coupler portion to another end surface of the optical coupler portion. The housing portion has a recess for receiving the optical connector, with one of the end surfaces of the optical coupler portion forming a back surface of the recess.

Abstract: An optical subassembly is provided. A mounting structure having a plurality of angled conductive traces is disposed on a first surface of the mounting structure. A holding device, coupled to a second surface of the mounting structure, has a plurality of optical channels. A laser optical device is electrically connected to the conductive traces on the mounting structure. An optical signal is emitted or received by the laser optical device and is converted to an electrical signal. The electrical signal is transmitted by way of the plurality of angled conductive devices to the plurality of optical channels.

Abstract: An optical coupler and housing arrangement includes a housing portion adapted to receive an optical connector of a fiber optic cable, and further includes an optical coupler portion integrally formed with the housing portion. The optical coupler portion is adapted to transmit optical signals to and from the fiber optic cable. The optical coupler portion has a plurality of optical fibers for transmitting the optical signals. Each of the optical fibers extends from one end surface of the optical coupler portion to another end surface of the optical coupler portion. The housing portion has a recess for receiving the optical connector, with one of the end surfaces of the optical coupler portion forming a back surface of the recess.

Abstract: A coupling arrangement includes a vertical cavity surface emitting laser. A carrier has the vertical cavity surface emitting laser affixed thereto. An optical coupler is coupled to the vertical cavity surface emitting laser, and has a plurality of optical fibers which receive light emitted from the vertical cavity surface emitting laser. The vertical cavity surface emitting laser is separated from the optical coupler by a gap and is free of direct contact with the optical coupler. The gap is less than about 50 microns, and is greater than zero microns. A curable adhesive is disposed in the gap for coupling the vertical cavity surface emitting laser to the optical coupler. The adhesive has a viscosity that defines a size of the gap.

Abstract: In one aspect of the invention, an assembly includes an optical-electronic die having electrically conductive pads and a submount with first and second opposing sides and a third side essentially perpendicular to the first submount side. The first and third submount sides have an adjoining edge, with electrically conductive pads on the first submount side bonded to the die pads, second electrically conductive pads on the third side of the submount, and electrically conductive traces interconnecting the first and second submount pads. The conductive traces are formed on the first and third sides and adjoining edge of the submount by a process that uses a shadow mask.

Abstract: A plug which has a plugging portion and a stem extending therefrom is formed of an elastomeric material in order to deform to create a wiping engagement and a seal with the walls of a receiving cavity. The stem and plugging portion include both cavities for receiving alignment pins in the device being plugged and a manually engageable portion on a distal end of the stem for removing the plug from the sealed cavity, such as within an optical subassembly module. The side edges of the plugging member conform to the cavity cross-section to enhance the sealing yet do not unduly deform the member. The sealing member is formed with one or more standoffs to engage an end face of the cavity, assuring no contact between the optical elements and the plug. The edges of the plug deform upon insertion to create the seal and form a wiping engagement with the cavity interior.

Abstract: The present invention provides a means of saving a significant amount of shielding gas, primarily in the metal inert gas (MIG) welding process. The invention significantly reduces a major reason for shielding gas waste, which is excess shielding gas storage in the hose connecting the shielding gas source to the welding machine. Other methods employed over the years to achieve the objective of reducing shielding gas waste have been complex, subject to leaks or were not sufficiently robust for the environment in which they are used therefore are not widely employed. The present invention consists of a hose connecting the shielding gas supply to the welding machine, which has a small internal volume. The outside diameter of the shielding gas delivery hose is sufficiently large and robust to provide satisfactory service in a welding fabricating environment.

Abstract: An optical coupler includes a first plate and a second plate superposed over the first plate. At least the second plate has at least one groove formed therein. The at least one groove extends continuously from one edge of the second plate to another edge of the second plate. An optical fiber is disposed in the at least one groove.