Jds Uniphase Corporation

International Business Machines Corporation

Michael Francis Hanley

David Peter Gaio

Scott Michael Branch

William K Hogan

William James Anderl

Howard Victor Mahaney, Jr

James Robert Moon

Bruce Peter Kruger

Gerald Daniel Malagrino, Jr

Glen Walden Johnson

Ladd William Freitag

Leland Leslie Day

Paul John Sendelbach

Eugene E Distad

Marian C Hargis

Gary Heitkamp

Gerald Daniel Malagrino Jr

Darwin Lee Koerber

Jeremy J Baltz

A method of cooling an optical transceiver that is mountable in a wall opening and a method of cooling a data transfer system in combination with an optical transceiver is described. An optical transceiver is provided that has a form factor and one end portion that is insertable within a wall opening in a wall. Ambient air is ventilated over a major surface portion of the optical transceiver by mounting said end portion to the wall opening so that at least one vent is formed within confines of the wall opening. The vent allows air to pass between the exterior and interior of the enclosure, and over the major surface portion of the optical transceiver.

Compact optical transceivers including thermal distributing and electromagnetic shielding systems and methods therefor

The present invention relates to a heat sinking tab for dissipating heat directly from an optical sub-assembly (OSA) to a transceiver housing, within which the optical sub-assembly is located. The heat sinking tab includes a mounting plate for mounting on the rear end of a transistor outline (TO) can, and a finger for extending into contact or close proximity to the transceiver housing. The mounting plate also provides a stiffening plate for flexible conductors used to connect the OSA leads to a transceiver printed circuit board (PCB).

Heat sink tab for optical sub-assembly

An optical transceiver includes structures that define an electrical connector port for allowing connection of an electrical connector to an optical subassembly of the transceiver, and structures that define a vent surrounding at least portions of the connector port, whereby the vent allows bidirectional passage of air therethrough. Included in the transceiver are structures that define electromagnetic interference shielding and selectively transfer heat of heat generating electronic components by conduction to a transceiver housing. Methods of cooling the transceiver by ventilation and internal heat conduction are present.

Compact optical transceivers including thermal distributing and electromagnetic shielding systems and methods thereof

The present invention relates to an electrical receptacle for a transceiver, which receives a bundle of copper wires, instead of optical fibers, for transmitting and/or receiving a plurality of parallel signals over short distances. The electrical receptacle includes an electro-magnetic interference (EMI) shield fully enclosed by the housing of the transceiver module and grounded thereto by spring fingers extending between the EMI shield and the housing. The receptacle according to the present invention enables the overall height of the transceiver module to be kept to a minimum.

Receptacle for copper wire transceivers

The present invention relates to a delatching mechanism for an electronic module, such as an opto-electronic transceiver or a copper transceiver, for locking the electronic module in a host cage. The delatching mechanism enables a conventional small form factor (SFP) sized module to be unlatched while a cable remains engaged therein. A manually engageable lever, such as a bail handle, is rotatably connected on one end of a pivoting latch, and includes a projection for abutting against the module housing for distributing the force applied to the bail to one end of the pivoting latch, whereby the other end of the pivoting latch rotates away from engagement with the host cage.

Transceiver delatching mechanism

The present invention relates to an electronic module, such as an opto-electronic transceiver or a copper transceiver, for plugging into a host receptacle. In an effort to eliminate the use of costly and inefficient sheet metal spring fingers for reducing EMI emissions, the present invention proposes to use solid conductive projections extending outwardly from the sides and top of the module housing. However, in highly populated host receptacles, adjacent cages often share a common sheet metal wall, which will deform when a module with a solid projection extending therefrom is inserted, thereby making insertion of an adjacent module very difficult. The present invention eliminates this problem by vertically offsetting projections on the opposite sides of the housing so no two projections are in the same horizontal plane.

Vertically offset EMI projections

An optical transceiver providing a carrier; a cover couplable to a portion of the carrier to define a transceiver enclosure; and, an electro-optical assembly supported in the enclosure is provided. A coupling mechanism and cooperating structure are particularly adapted to define pivoting motion of the cover relative to the carrier, whereby interference of the cover and the electro-optical assembly is avoided. Methods of assembling the transceiver components are present.

Coupling mechanism for an optical transceiver housing

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.

Pluggable optical transceiver latch

The invention relates to modular heat-dissipating housing covers for opto-electronic modules, e.g. transceivers. The housing covers according to the present invention are constructed out of various different parts, which provide different levels of heat dissipation depending on the desired implementation, while maintaining a seal against EMI leakage. Extra heat sinking portions are provided to dissipate heat generated from specific heat generating sources. The extra heat sinking portions are configured into a shape and/or out of a material that provides more thermal dissipation than the standard cover provided. Independent control over the different heat sinking portions enables a better fit and appropriate dissipation.

Modular heat sinks

The present invention relates to an optical transceiver unlatching device for disengaging the optical transceiver from a mounting cage found in a host computer device. The unlatching device converts rotational motion from a bail handle into reciprocating motion for a sliding latch member, which disengages spring fingers extending from the mounting cage from abutment surfaces formed in the sides of the optical transceiver. A return spring, extending between the sliding latch member and the optical transceiver housing, is provided to bias the unlatching device into the latched position.

Unlatching mechanism for an optical transceiver

A latch is controlled to latch and unlatch a device by using a portion of the insertion and extraction movement of the device being latched. The latch incorporates a pivoted latching member carried on the device being latched. The end or latching surface is positionable behind a latch bar, preventing the extraction of the latched device. The latch member is displaced to latch or release by a spring disposed between the frame of the device being latched and the latch member. When the actuator member is withdrawn from its ineffective position and if the latch arm occupies a latched position, the actuator member engages surfaces on the latch member and the module frame which are too closely spaced to permit free passage of the engaging portion of the actuator. This engagement with the surfaces results in spreading the engaged portions of the module frame and the latch member, thereby pivoting the latch member to unlatch the latching end of the latch member from a retaining surface.

Pull type latch mechanism for removable small form factor electronic modules

An electromagnetic radiation shield useful to attenuate or prevent the escape of electromagnetic radiation from the front of transceiver opto-electronic subassemblies resident in an opening or port in the housing of an electronic system is formed with both an aperture for each barrel of the opto-electronic subassemblies and a plurality of extensions projecting outwardly from the shield. The distal ends of the extensions are bent or shaped to form smoothly curved contact surfaces that project outside the transceiver module to make contact with a grounded member of the housing or other electrically grounded portion of the electronic system of which the transceiver module is a part. The electromagnetic radiation shield is assembled with the transceiver subassemblies and disposed within a transceiver module to be inserted into a communications port of a computer or server. The transceiver module contains elements that may generate and radiate electromagnetic energy. The electromagnetic energy must be prevented from escaping or attenuated to prevent electromagnetic interference in the other nearby electronic components or systems susceptible to electromagnetic interference.

Internal electromagnetic radiation shield with ground connection for removable small form factor transceivers

A push-to-release latching mechanism for retaining a transceiver module in a communication port of a computer or server is provided with a beam spring structure for positional restoration of the latch member, and the latch is supported and moveable relative to the host transceiver module. The latch member may be formed to include camming surfaces that facilitate the insertion of the transceiver module into a communication port and mate with a guide rail and connector resident in a communication port. The latch member may be adapted to latch with a rigid latch bar or a cantilevered spring. Additionally, the latch may be formed with a camming surface which insures that the latch is displaced to a latching position whenever network cables are connected to the transceiver module by camming the latch into the secure, latched position and subsequently preventing the latch from moving to an insecure or unlatched position. The latch member is pivotally supported on the transceiver module in a shaft/journal arrangement and thus is removed from the communication port whenever the transceiver module is removed, thereby preventing the latch from projecting from the communication port and being subject to damage. The latch member may be formed with a living hinge to provide a pivot axis and one end of the living hinge may be attached to a electronic module chassis or to a support structure which may be mated with a electronic module chassis for easy replaceability.

Pivoting type latch for removable electronic devices

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.

Growing community of inventors

Rochester, MN, United States of America

Michael Francis Hanley