A laser diode driver output stage for driving an associated laser diode
device. The laser diode driver output stage includes a driver circuit
adapted to receive an input data signal at an input node and provide an
output signal to a positive output node and a negative output node in
response to the data signal. The laser diode driver output stage further
includes a transformer having a positive terminal of a first side coupled
to the positive output node of the driver circuit, a negative terminal of
the first side coupled to the negative output node, a positive terminal
of a second side coupled to the positive output node, and negative
terminal of the second side coupled to a bias current generator. The
transformer functions to isolate the bias current from fluctuations in
the output signal, whereby the output signal and bias current are
provided to the associated laser diode device.