摘要:
A receptacle that is configured to receive connectors of different types. If a connector of one type is received into the receptacle, the connector contacts engage one set of receptacle contacts. If a connector of another type is received into the receptacle, the connector contacts engage another set of receptacle contacts, and so forth for potentially other connector types and other contact sets. A communication system may also control which PHY circuitry communicates with the receptacle depending on which connector type is plugged into the receptacle. The receptacle can include a connector detection mechanism configured to detect whether a connector of the first type or second type is inserted into the receptacle. Circuitry and pin design of the receptacle also depends on the first and second connector types.
摘要:
A PCB is provided that is suitable for use in applications where EMI control is of interest. The PCB includes circuitry that communicates with an edge connector having edge traces located on its surface. Additionally, embedded traces are disposed within the dielectric material of the PCB, and each embedded trace electrically connects an edge trace with a corresponding median trace located on a surface of the PCB. An embedded ground layer substantially disposed within the dielectric material defines an area within the dielectric material through which the embedded traces pass. Finally, one or more vias are provided that extend through the dielectric material of the PCB and are filled with a conductive material. The vias are electrically connected to the embedded ground layer and configured to electrically communicate with an associated module. In this way, a structure is implemented that facilitates control of electromagnetic radiation emitted by the PCB circuitry.
摘要:
An electronic module is provided that includes a housing having electrically conductive top and bottom housing portions in substantial contact with each other and cooperating with each other to define an opening. A printed circuit board is disposed within the housing and includes an edge connector at least partially extending through the opening in the housing. The printed circuit board also defines a non-conductive through opening configured and arranged so that the housing portions contact each other by way of the through opening. In this way, the housing portions cooperate to subdivide the opening defined by the housing into at least two relatively smaller openings that, as a result of their relatively small size, facilitate containment of electromagnetic emissions generated by the electronic module.
摘要:
An optical transceiver module having improved heat dissipation characteristics is disclosed. The transceiver includes a transmitter optical subassembly (“TOSA”), comprising a hermetically sealed housing penetrated by a component platform that includes interior and exterior platform portions. The interior portion of the component platform supports a laser that produces optical signals for emission by the TOSA. A heat tongue is attached to the both the interior and exterior portions of the component platform and is configured to absorb heat that is produced by the laser and absorbed by the component platform. A heat spreader is positioned within the transceiver shell and includes a cavity defined adjacent the heat tongue. A slug is received into the cavity and is positioned to contact both the heat tongue and the heat spreader body. The slug enables heat from the tongue to be transmitted to the heat spreader and eventually to the transceiver shell.
摘要:
A receptacle that is configured to receive connectors of different types. If a connector of one type is received into the receptacle, the connector contacts engage one set of receptacle contacts. If a connector of another type is received into the receptacle, the connector contacts engage another set of receptacle contacts, and so forth for potentially other connector types and other contact sets. A communication system may also control which PHY circuitry communicates with the receptacle depending on which connector type is plugged into the receptacle.
摘要:
An optical transceiver module characterized by reduced electromagnetic interference (“EMI”) emissions for improved operation is disclosed. The transceiver includes a housing formed by top and bottom housing portions that are joined to define a cavity. A printed circuit board (“PCB”) is positioned within the cavity and includes an edge connector extending from one housing end. The PCB also includes two holes defined near the edge connector and lined with electrically conductive material. Conductive plates located on both the top and bottom housing portions electrically connect with the conductive holes to electrically interconnect the top and bottom housing portions. Two posts on the top housing portion are received into the conductive holes to align the PCB with the housing portions. A chassis ground from one or both of the housing portions extends through the plates and holes to create a “chassis ground fence,” preventing EMI emission from within the transceiver cavity.
摘要:
A shield element for reducing electromagnetic interference (“EMI”) in an optical transceiver module assembly. The transceiver module assembly includes an optical transceiver received within a cage. The cage mounts to a host board and receives in one end thereof a right angle connector of the host board. A rear end of the optical transceiver includes an edge connector that electrically interfaces with a receptacle of the right angle connector. An EMI shield element is interposed between the rear end of the optical transceiver and the right angle connector. The EMI shield element includes a base that surrounds a portion of the right angle connector. Wall portions upwardly extend from the base around the right angle connector to form an angled shield seating surface that engages with a complementarily angled seating surface on the transceiver rear end, thereby forming an EMI shield when the optical transceiver is received into the cage.
摘要:
Various systems and methods of monitoring laser safety by sensing contact of the system with a sample are provided. The system includes a focusing element for focusing an incident light from a laser light source onto a sample, an optical element having a collection zone for collecting a signal from the sample, a reflected light sensor for sensing a reflected light from the sample, wherein the reflected light sensor is located outside the collection zone of the optical element and on an inner surface of a housing of the system, an electrical circuit operably connected to the reflected light sensor and the laser light source and configured to control power to the laser light source in accordance with the reflected light sensed by the reflected light sensor and a spectral analyzer for processing the signal. Methods and other systems are also described and illustrated.
摘要:
An apparatus consisting of stacked slab waveguides whose outputs are vertically staggered is disclosed. At the input to the stacked waveguides, the entrances to each slab lie in approximately the same vertical plane. A spot which is imaged onto the input will be transformed approximately to a set of staggered rectangles at the output, without substantial loss in brightness, which staggered rectangles can serve as a convenient input to a spectroscopic apparatus. A slit mask can be added to spatially filter the outputs so as to present the desired transverse width in the plane of the spectroscopic apparatus parallel to its dispersion.
摘要:
An apparatus is presented for stabilizing an optical, thermal, and mechanical interface between a spectroscopic and/or imaging system and a biological sample. The apparatus includes a window retainer having a retainer surface and a well. The retainer surface surrounds the well. Further, the retainer surface is substantially planar. An optical window is located in the well. The optical window comprises a first and second surface. The second surface is in contact with the window retainer. The first surface is substantially flush with the retainer surface. The apparatus further includes an attachment mechanism coupling the window retainer to the biological sample such that a fluid, gel, adhesive or elastomer interposed between the optical window and the biological sample is trapped in the well.