Abstract: Various embodiments of a laser driver are described herein. In an embodiment, a laser driver system includes: an external set of inductors including a first external inductor and a second external inductor; an internal set of inductors including a first internal inductor and a second internal inductor; and a DC-to-DC convertor configured to bias a first output path defined by the first external inductor and the first internal inductor and a second output path defined by the second external inductor and the second internal inductor.

Abstract: Various embodiments of a laser driver are described herein. In an embodiment, a laser driver system includes: an external set of inductors including a first external inductor and a second external inductor; an internal set of inductors including a first internal inductor and a second internal inductor; and a DC-to-DC convertor configured to bias a first output path defined by the first external inductor and the first internal inductor and a second output path defined by the second external inductor and the second internal inductor.

Abstract: Various embodiments of a laser driver are described herein. In an embodiment, a laser driver system includes: an external set of inductors including a first external inductor and a second external inductor; an internal set of inductors including a first internal inductor and a second internal inductor; and a DC-to-DC convertor configured to bias a first output path defined by the first external inductor and the first internal inductor and a second output path defined by the second external inductor and the second internal inductor.

Abstract: Various embodiments of a laser driver are described herein. In an embodiment, a laser driver system includes: an external set of inductors including a first external inductor and a second external inductor; an internal set of inductors including a first internal inductor and a second internal inductor; and a DC-to-DC convertor configured to bias a first output path defined by the first external inductor and the first internal inductor and a second output path defined by the second external inductor and the second internal inductor.

Abstract: Methods and systems are described for converting single-ended signals to differential signals. In one exemplary embodiment, an input single-ended signal is received and converted into a differential signal having minimized jitter without using a DC-cancellation loop.

Abstract: Methods and systems are described for converting single-ended signals to differential signals. In one exemplary embodiment, an input single-ended signal is received and converted into a differential signal having minimized jitter without using a DC-cancellation loop.

Abstract: A method for controlling a modulation current and a bias current of a laser driver includes generating a differential signal that has a voltage offset, for setting the modulation current, over a pair of differential inputs from a pre-driver circuit to a laser driver circuit. A voltage is generated for setting the bias current over a bias/monitor pin from the pre-driver circuit to the laser driver circuit. The voltage offset is sensed at the laser driver circuit and the modulation current is set based on the voltage offset. The voltage is sensed at the laser driver circuit and the bias current is set based on the voltage. A photo current is delivered over the bias/monitor pin from the laser driver circuit to the pre-driver circuit wherein no interaction occurs between the photo current and the voltage. The voltage is then modified based on the photo current.

Abstract: A system and method for stabilizing an extinction ratio for an optical transmitter that uses a laser diode that is modulated by a laser driver, the scheme having a modulating current and a bias current, wherein a portion of the bias current is fed forward into the modulating current to stabilize the extinction ratio and thereby improve a laser's performance over time and with increases in temperature.

Abstract: A system and method for stabilizing an extinction ratio for an optical transmitter that uses a laser diode that is modulated by a laser driver, the scheme having a modulating current and a bias current, wherein a portion of the bias current is fed forward into the modulating current to stabilize the extinction ratio and thereby improve a laser's performance over time and with increases in temperature.