VOLTAGE TUNABLE SIGE PHOTODETECTOR - A NOVEL TOOL FOR CRYPTED OPTICALCOMMUNICATIONS THROUGH WAVELENGTH MIXING

Authors
MASINI G COLACE L GALLUZZI F ASSANTO G PEARSALL TP PRESTING H
Citation
G. Masini et al., VOLTAGE TUNABLE SIGE PHOTODETECTOR - A NOVEL TOOL FOR CRYPTED OPTICALCOMMUNICATIONS THROUGH WAVELENGTH MIXING, Applied physics letters, 70(24), 1997, pp. 3194-3196
Citations number
8
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
70
Issue
24
Year of publication
1997
Pages
3194 - 3196
Database
ISI
SICI code
0003-6951(1997)70:24<3194:VTSP-A>2.0.ZU;2-Y
Abstract
A novel tandem SiGe-Si device is demonstrated which, based on differen t photoresponses in two back-to-back diodes, exhibits a voltage tunabl e spectral responsivity. This feature, in conjunction with a wavelengt h dependence in the current direction, allows the efficient decryption of a signal when substantial noise is added to distinct carrier frequ encies. Time dependent encryption schemes are also possible via a modu lated voltage bias. (C) 1997 American Institute of Physics.