Integrated post-amplifier and laser driver assembly with digital control interface

In a high-speed data communications system an integrated post-amplifier and laser driver assembly, comprising:

• a post-amplifier assembly configured to receive an input data signal from an optical receiver;
• a laser driver assembly implemented together with the post-amplifier assembly in a single IC and configured to transmit an output data signal to a transmit optical subassembly;
• a digital control interface in at least indirect communication with the post-amplifier assembly and the laser driver assembly, and configured to receive a control signal;
• a glue logic module in communication with the digital control interface;
• a first digital to analog converter in communication with the glue logic module and that transmits a first portion of the control signal to the post-amplifier assembly;
• and
• a second digital to analog converter in communication with the glue logic module and that transmits a second portion of the control signal to the laser driver assembly, the post-amplifier assembly comprising:
• a first amplifier configured to implement changes, in accordance with the control signal, to at least one of:
• the polarity of the input data signal received by the post-amplifier assembly from the optical receiver;
• the rise time of the input data signal received by the post-amplifier assembly from the optical receiver;
• and the amplitude of the input data signal received by the post-amplifier assembly from the optical receiver;
• and
• a second amplifier that includes hysteresis and threshold inputs and is configured to generate feedback concerning the input data signal received by the post-amplifier assembly from the optical receiver.

An optical transceiver, comprising:

• a receive optical subassembly, comprising:
• an optical receiver configured to receive a digital optical data signal;
• a transmit optical subassembly, comprising:
• an optical transmitter;
• and
• a monitor photodiode configured to monitor an optical output of the optical transmitter;
• and
• an integrated post-amplifier and laser driver assembly, comprising:
• a post-amplifier assembly in communication with the optical receiver;
• a laser driver assembly implemented together with the post-amplifier in a single IC, the laser driver assembly being in communication with the transmit optical subassembly and configured to transmit an output data signal to the transmit optical subassembly;
• and
• a digital control interface in communication with the post-amplifier assembly and the laser driver assembly, the digital control interface receiving a control signal that includes instructions and parameter values for the post-amplifier assembly and the laser driver assembly, wherein the post-amplifier assembly and the laser driver assembly each receive at least one of the instructions and parameter values through one or more digital to analog converters, and wherein the post-amplifier assembly comprises:
• a first amplifier configured to implement changes, in accordance with the control signal, to at least one of:
• the polarity of the input data signal received by the post-amplifier assembly from the optical receiver;
• the rise time of the input data signal received by the post-amplifier assembly from the optical receiver;
• and the amplitude of the input data signal received by the post-amplifier assembly from the optical receiver;
• and
• a second amplifier that includes hysteresis and threshold inputs and is configured to generate feedback concerning the input data signal received by the post-amplifier assembly from the optical receiver.

In a high-speed data communications system, an optical transceiver comprising:

• an optical receiver;
• an optical transmitter;
• an integrated post-amplifier and laser driver assembly, comprising:
• a post-amplifier assembly configured to receive an input data signal from the optical receiver, wherein the post-amplifier assembly comprises:
• a first amplifier configured to implement changes, in accordance with the control signal, to at least one of:
• the polarity of the input data signal received by the post-amplifier assembly from the optical receiver;
• the rise time of the input data signal received by the post-amplifier assembly from the optical receiver;
• and the amplitude of the input data signal received by the post-amplifier assembly from the optical receiver;
• and
• a second amplifier that includes hysteresis and threshold inputs and is configured to generate feedback concerning the input data signal received by the post-amplifier assembly from the optical receiver;
• a laser driver assembly implemented together with the post-amplifier assembly in a single IC and configured to transmit an output data signal to the optical transmitter;
• a serial digital interface in at least indirect communication with the post-amplifier assembly and the laser driver assembly, and configured to receive a control signal;
• a glue logic module in communication with the serial digital interface;
• a first digital to analog converter in communication with the glue logic module and that transmits a first portion of the control signal to the post-amplifier assembly;
• and
• a second digital to analog converter in communication with the glue logic module and that transmits a second portion of the control signal to the laser driver assembly.