Patent · US Active

Multiple distributed feedback laser devices

US8149890B2 · kind B2 · utility

1Cited by

6References

20Claims

0Family size

Assignee

KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY · KR

Inventors

Kyung Hyun Park · Daejeon, KR
Namje Kim · Daejeon, KR
Young Ahn Leem · Daejeon, KR
Sang-Pil Han · Daejeon, KR
Hyunsung Ko · Seoul, KR
Chul-Wook Lee · Daejeon, KR
Dong Hun Lee · Fawn Drive, AU
Jaeheon Shin · Daejeon, KR
Eundeok Sim · Daejeon, KR
Yongsoon Baek · Daejeon, KR

Key dates

Filing date	Dec 29, 2010
Grant date	Apr 3, 2012
Priority date	—
Expiry date	Dec 29, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH01S5/34306
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Provided is a multiple distributed feedback laser device which includes a first distributed feedback region, a modulation region, a second distributed feedback region, and an amplification region. An active layer is disposed on the substrate of the first distributed feedback region, the modulation region, the second distributed feedback region, and the amplification region. A first diffraction grating is disposed in the first distributed feedback region to be coupled to the active layer in the first distributed feedback region. A second diffraction grating is disposed in the second distributed feedback region to be coupled to the active layer in the second distributed feedback region. The multiple distributed feedback laser device further includes a first micro heater configured to supply heat to the first diffraction grating and a second micro heater configured to supply heat to the second diffraction grating.

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