Type

Journal Article

Authors

Gilberto Brambilla
John Ballato
Gerald Farrell
Jayanta Sahu
Qiang Wu
Yuliya Semenova
Paul Foy
Thomas Hawkins
Anirban Dhar
Ming Ding
and 2 others

Subjects

Engineering

Topics
semi conductor microsphere resonator optical devices electrical and computer engineering germanium silica fiber optical fiber tapered fiber systems and communications

Germanium Microsphere High-Q Resonator (2012)

Abstract In this Letter, the fabrication and characterization of a microsphere resonator from the semiconductor germanium is demonstrated. Whispering gallery modes are excited in a 46 μm diameter germanium microsphere resonator using evanescent coupling from a tapered silica optical fiber with a waist diameter of 2 μm. Resonances with Q factors as high as 3.8×104 at wavelengths near 2 μm are observed. Because of their ultrahigh optical nonlinearities and extremely broad transparency window, germanium microsphere resonators offer the potential for optical processing devices, in particular at long wavelengths, such as around 2 μm.
Collections Ireland -> Dublin Institute of Technology -> College of Engineering and Built Environment
Ireland -> TU Dublin -> Articles
Ireland -> TU Dublin -> Research Institutes/Centres/Groups
Ireland -> TU Dublin -> Colleges
Ireland -> Dublin Institute of Technology -> Articles
Ireland -> Dublin Institute of Technology -> Environmental Sustainability & Health Institute
Ireland -> Dublin Institute of Technology -> Articles
Ireland -> TU Dublin -> Articles
Ireland -> TU Dublin -> Articles
Ireland -> Dublin Institute of Technology -> School of Electrical and Electronic Engineering
Ireland -> Dublin Institute of Technology -> ESHI Publications
Ireland -> TU Dublin -> Environmental Sustainability & Health Institute
Ireland -> Dublin Institute of Technology -> Colleges
Ireland -> Dublin Institute of Technology -> Research Institutes/Centres/Groups
Ireland -> Dublin Institute of Technology -> Articles
Ireland -> TU Dublin -> ESHI Publications
Ireland -> TU Dublin -> College of Engineering and Built Environment
Ireland -> TU Dublin -> School of Electrical and Electronic Engineering

Full list of authors on original publication

Gilberto Brambilla, John Ballato, Gerald Farrell, Jayanta Sahu, Qiang Wu, Yuliya Semenova, Paul Foy, Thomas Hawkins, Anirban Dhar, Ming Ding and 2 others

Experts in our system

1
Gilberto Brambilla
TU Dublin
Total Publications: 24
 
2
Gerald Farrell
TU Dublin
Total Publications: 212
 
3
Qiang wu
TU Dublin
Total Publications: 90
 
4
Yuliya Semenova
TU Dublin
Total Publications: 136