Patent ID: 11901696
Assignee: GOOGLE LLC
Field: Optics (Instruments)
Classification: CPC H | IPC H

Claim 0:
1. A method comprising:
receiving, at a 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-on state:
delivering, by the laser driving circuit, a first bias current to an anode of a gain-section diode disposed on a shared substrate of a tunable laser, the tunable laser comprising an Electro-absorption Modulated tunable laser; and
delivering, by the laser driving circuit, a second bias current to an anode of a phase-section diode disposed on the shared substrate of the tunable laser, wherein the second bias current is less than the first bias current; and

when the burst mode signal transitions to be indicative of the burst-off state from the burst-on state:
delivering, by the laser driving circuit, the first bias current to the anode of the gain-section diode; and
delivering, by the laser driving circuit, the second bias current to the anode of the phase-section diode, wherein the first bias current is less than the second bias current,

wherein:
the first bias current is equal to a tail current minus the second bias current; and
the second bias current is equal to the tail current minus the first bias current.