Title :
Photoresponse enhancement in nanoscale Ge photodetector through split bull´s eye shaped plasmonic antenna
Author :
Ren, Fang-Fang ; Ang, Kah-Wee ; Yu, Mingbin ; Lo, Guo-Qiang ; Shi, Yi
Author_Institution :
Sch. of Electron. Sci. & Eng., Nanjing Univ., Nanjing, China
fDate :
Aug. 28 2011-Sept. 1 2011
Abstract :
We exploit the idea of split bull´s eye antenna for a nanometer-scale germanium photodetector operating at a standard communication wavelength of 1310 nm. The nontraditional plasmonic metal aluminum has been implemented in the resonant antenna structure fabricated by standard CMOS processing. A significant enhancement in photoresponse is achieved in split bull´s eye scheme due to an increased optical near-field in the active region.
Keywords :
antennas; elemental semiconductors; germanium; nanophotonics; photodetectors; plasmonics; CMOS processing; Ge; active region; nanoscale photodetector; nontraditional plasmonic metal aluminum; optical near field; photoresponse enhancement; resonant antenna structure; split bull eye shaped plasmonic antenna; wavelength 1310 nm; Absorption; Antennas; Gratings; Metals; Optical surface waves; Photodetectors; Plasmons;
Conference_Titel :
Quantum Electronics Conference & Lasers and Electro-Optics (CLEO/IQEC/PACIFIC RIM), 2011
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4577-1939-4
DOI :
10.1109/IQEC-CLEO.2011.6194021
