Abstract: The optoelectronic transceiver includes a housing, an optical transmitter, an optical receiver, a memory, and an interface. The optical transmitter, receiver, memory, and interface are each disposed at least partially within the housing. The memory is configured for storing information relating to operation of the transceiver. The interface is configured to allow a host to read from host specified locations within the memory. The optoelectronic transceiver also includes a first row of at least five substantially parallel and elongate pins extending from the housing, and a second row of at least five substantially parallel and elongate pins extending from the housing. The second row is substantially parallel to the first row. The optoelectronic transceiver also includes two electrical contacts each aligned with at least one of the first and second rows. The two electrical contacts are configured to be electrically coupled to the interface.

Abstract: A transmitter subassembly ground return path comprises a coupling member having a plurality of layers. At least one of the layers includes a signal trace layer that has one or more signal traces coupling components of a transceiver substrate to components of the transmitter subassembly. At least one of the one or more signal traces can be coupled to a signal coupling capacitor. At least one of the ground plane layers can connect the body of the transmitter subassembly to one or more common mode grounding capacitors. The ground plane layers of the coupling member also shield at least some of the electromagnetic radiation that can emanate from the signal trace layer in high frequency data transmissions.

Abstract: An optical transceiver module that includes an enclosure within which are disposed a transmitter module and a receiver module. A primary and secondary board are disposed as well in the enclosure, and the transmitter module and the receiver module are each connected with one of the boards. The primary and secondary boards each have a ground plane, and a third ground plane is provided by a ground signal plate that disposed within the enclosure and electrically coupled with the primary board and the secondary board.

Abstract: A transceiver module including a primary printed circuit board and a secondary printed circuit board in an enclosure is presented. The primary printed circuit board is coupled to the secondary printed circuit board by a connector pin that protrudes out of a critical surface of the enclosure. The printed circuit boards may be positioned substantially parallel to the critical surface of the enclosure. When a transmitter is electrically connected to the primary printed circuit board and a receiver is electrically connected to the secondary printed circuit board, the transmitter and the receiver may be positioned in a plane that is also substantially parallel to the plane of the critical surface.

Abstract: An apparatus and method are provided for setting the AC and DC bias levels of a laser diode in an optoelectronic transceiver so as to control the device's extinction ratio. An optical output of the transceiver is looped back to an optical input of the transceiver. The method includes setting a DC bias level for the laser diode, setting an AC bias level for the laser diode to each of a predefined sequence of AC bias level settings, and receiving from the transceiver a sequence of optical output power measurements, the sequence of optical output power measurements including an average optical output power measurement corresponding to each of the AC bias level settings in the predefined sequence. From the received sequence of optical output power measurements preferred AC and DC bias level settings are determined and stored in the transceiver so as to control the AC and DC bias levels of the laser diode.

Abstract: An optical signal detector monitoring circuit can include a current divider current mirror (CDCM) and a current multiplier current mirror (CMCM). A mirror leg of the CDCM generates a current corresponding with a part of the CDCM's primary leg current. The CMCM's primary leg couples to the CDCM's mirror leg. The CMCM generates a mirror leg current corresponding with a multiple of its primary leg current. Another circuit can include a first current mirror having a primary current leg (PCL), coupled between an optical signal detector and one of an electrical source and an electrical sink, that exhibits a resistance corresponding with a part of the resistance of the first current mirror's mirror current leg (MCL). The circuit's second current mirror has a MCL that exhibits a resistance corresnonding with a part of the resistance of the second current mirror's PCL, which couples with the first current mirror's MCL.

Abstract: In an embodiment of the invention the circuit for monitoring an optical signal detector comprises a current divider current mirror and a current multiplier current mirror. The current divider current mirror has a mirror leg and a primary leg. The primary leg is coupled to the optical signal detector. The current divider current mirror is configured to generate mirror leg current corresponding with a fraction of the primary leg current. The current multiplier current mirror has a mirror leg and a primary leg coupled to the mirror leg of the current divider current mirror. The current multiplier current mirror is configured to generate mirror leg current corresponding with a multiple of the primary leg current. In another embodiment the circuit comprises a first and second current mirror.

Abstract: A transmitter subassembly ground return path comprises a coupling member having a plurality of layers. At least one of the layers includes a signal trace layer that has one or more signal traces coupling components of a transceiver substrate to components of the transmitter subassembly. At least one of the one or more signal traces can be coupled to a signal coupling capacitor. At least one of the ground plane layers can connect the body of the transmitter subassembly to one or more common mode grounding capacitors. The ground plane layers of the coupling member also shield at least some of the electromagnetic radiation that can emanate from the signal trace layer in high frequency data transmissions.

Abstract: An apparatus and method are provided for setting the AC and DC bias levels of a laser diode in an optoelectronic transceiver so as to control the device's extinction ratio. An optical output of the transceiver is looped back to an optical input of the transceiver. The method includes setting a DC bias level for the laser diode, setting an AC bias level for the laser diode to each of a predefined sequence of AC bias level settings, and receiving from the transceiver a sequence of optical output power measurements, the sequence of optical output power measurements including an average optical output power measurement corresponding to each of the AC bias level settings in the predefined sequence. From the received sequence of optical output power measurements preferred AC and DC bias level settings are determined and stored in the transceiver so as to control the AC and DC bias levels of the laser diode.

Abstract: A transceiver module including a primary printed circuit board and a secondary printed circuit board in an enclosure is presented. The primary printed circuit board is coupled to the secondary printed circuit board by a connector pin that protrudes out of a critical surface of the enclosure. The printed circuit boards may be positioned substantially parallel to the critical surface of the enclosure. When a transmitter is electrically connected to the primary printed circuit board and a receiver is electrically connected to the secondary printed circuit board, the transmitter and the receiver may be positioned in a plane that is also substantially parallel to the plane of the critical surface.