Burst mode laser driving circuit

A method comprising:

• delivering, by a laser driving circuit, a gain current to an anode of a gain-section diode disposed on a shared substrate of a tunable laser;
• delivering, by the laser driving circuit, a modulation signal to an anode of an Electro-absorption (EA) section diode disposed on the shared substrate of the tunable laser;
• receiving, at the laser driving circuit, a burst mode signal indicative of a burst-on state or a burst-off state;
• when the burst mode signal is indicative of the burst-off state, sinking, by the laser driving circuit, a sink current away from the gain current at the anode of the gain-section diode, the sink current less than the gain current delivered to the anode of the gain-section diode;
• and
• when the burst mode signal transitions to be indicative of the burst-on state from the burst-off state:
• ceasing, by the laser driving circuit, the sinking of the sink current away from the gain current at the anode of the gain-section diode;
• and
• delivering, by the laser driving circuit, an overshoot current to the anode of the gain-section diode,
• wherein delivering the modulation signal comprises capacitively-coupling a modulation stage of the laser driving circuit to the anode of the EA section diode, the modulation stage comprises a differential pair of first and second metal-oxide-semiconductor field-effect transistors (MOSFETs) each connected to a data signal source, the first MOSFET connected to a first resistor and the second MOSFET connected by a capacitor to the anode of the EA section diode, the first resistor connected to a voltage source.