公开(公告)号：US12009635B2

公开(公告)日：2024-06-11

申请号：US17057649

申请日：2019-05-07

Applicant: Google LLC

Inventor： Tao Zhang ,  Cedric Fung Lam ,  Xiangjun Zhao ,  Shuang Yin ,  Liang Du ,  Changhong Joy Jiang ,  Adam Edwin Taylor Ward Barratt ,  Claudio Desanti ,  Muthu Nagarajan

IPC: H01S5/0625 ,  H01S5/024 ,  H04B10/50 ,  H04B10/572 ,  H04J14/02

CPC classification number: H01S5/06256 ,  H01S5/02415 ,  H04B10/504 ,  H04B10/572 ,  H04J14/0282

Abstract: A method (600) for tuning a tunable laser (310) includes delivering a bias current (IDBR) to an anode of a distributed Bragg reflector (DBR) section diode (D2) disposed on a shared substrate of the tunable laser and receiving a burst mode signal (440) indicative of a burst-on state or a burst-off state. When the burst mode signal is indicative of the burst-off state, the method includes offsetting the bias current at the anode of the DBR section diode by one of sourcing a push current with the bias current to the anode of the DBR section diode or sinking a pull current away from the bias current at the anode of the DBR section diode. When the burst mode signal is indicative of the burst-on state, the method also includes ceasing any offsetting of the bias current at the anode of the DBR section diode.