Patent · US Active

Tunable laser bias circuit

US10153612B1 · kind B1 · utility

4Cited by

0References

26Claims

0Family size

Assignee

Google LLC · US

Inventors

Tao Zhang · Beijing, CN
Xiangjun Zhao · Fremont, US
Changhong Joy Jiang · Zhejiang, CN
Liang Du · Atlanta, US
Shuang Yin · Sunnyvale, US
Cedric Fung Lam · Milpitas, US
Adam Edwin Taylor Barratt · Portland, US

Key dates

Filing date	Oct 31, 2017
Grant date	Dec 11, 2018
Priority date	—
Expiry date	Oct 31, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH04B10/503
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A method includes receiving a mode control signal indicative of a current-mode or a voltage-mode. When the mode control signal is indicative of the voltage-mode, the method includes connecting a voltage-mode bias sub-circuit to an anode of a reflector-section diode and applying an adjustable bias voltage to bias a diode voltage at the anode of the reflector-section diode. The reflector-section diode is disposed on a shared substrate of a tunable laser. When the mode control signal is indicative of the current-mode, the method includes connecting a current-mode bias sub-circuit to the anode of the reflector-section diode and delivering an adjustable bias current to the anode of the reflector-section diode.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.