US 11,808,892 B2
Methods for driving optical loads and driver circuits for optical loads
Konstantin Petrovich Petrov, Sunnyvale, CA (US); and Mikhail Dolganov, Gilroy, CA (US)
Assigned to Lumentum Operations LLC, San Jose, CA (US)
Filed by Lumentum Operations LLC, San Jose, CA (US)
Filed on Mar. 23, 2020, as Appl. No. 16/827,327.
Claims priority of provisional application 62/836,556, filed on Apr. 19, 2019.
Prior Publication US 2020/0333438 A1, Oct. 22, 2020
Int. Cl. H04B 10/50 (2013.01); G01S 7/484 (2006.01); H01S 5/042 (2006.01); H04B 10/524 (2013.01)
CPC G01S 7/484 (2013.01) [H01S 5/0428 (2013.01); H04B 10/50 (2013.01); H04B 10/524 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A driver circuit for generating narrow electrical pulses of high repetition rate with high peak current to drive an optical load, the driver circuit comprising:
a source;
a first circuit path connected to the source, wherein the first circuit path includes:
a switch having an open state and a closed state, and
one or more inductive elements,
wherein the switch being in the closed state is to cause current to charge the one or more inductive elements through the first circuit path; and
a second circuit path to connect to the optical load, wherein the second circuit path is connected to the source, and wherein the second circuit path includes:
the one or more inductive elements,
a resistive element,
a first capacitive element in series with the optical load, and
a second capacitive element in parallel with the optical load,
wherein the switch transitioning from the closed state to the open state is to cause the one or more inductive elements to discharge current through the second circuit path to provide an electrical pulse to the optical load, and
wherein the second capacitive element is to suppress after pulse ringing by dumping oscillating voltages across the optical load.