DocumentCode
4626
Title
InGaAs Surface Normal Photodiode for 2 
Optical Communication Systems
Author
Nan Ye ; Hua Yang ; Gleeson, Michael ; Pavarelli, Nicola ; Hongyu Zhang ; O´Callaghan, James ; Wei Han ; Nudds, Noreen ; Collins, Sean ; Gocalinska, Agnieszka ; Pelucchi, Emanuele ; O´Brien, Peter ; Garcia Gunning, Fatima C. ; Peters, Frank H. ; Corbett,
Author_Institution
Tyndall Nat. Inst., Univ. Coll. Cork, Cork, Ireland
Volume
27
Issue
14
fYear
2015
fDate
July15, 15 2015
Firstpage
1469
Lastpage
1472
Abstract
High bandwidth 2-μm wavelength surface normal p-i-n photodiodes using a high indium-content InGaAs strain-relaxed absorbing layer clad by p- and n-doped AlInGaAs layers are realized. A parabolic grading was used to relax the lattice constant from that of the InP substrate. We compare structures with different p-doping profiles and absorber thicknesses to achieve a 3-dB bandwidth of ~10 GHz while maintaining a photoresponsivity of 0.93 A/W. A clear opening of the 10-Gb/s eye pattern was obtained with an input power of -3.07 dBm. By temperature-control of the mesa passivation process, the device leakage was reduced to 0.52 μA at -5 V bias.
Keywords
III-V semiconductors; aluminium compounds; gallium arsenide; indium compounds; lattice constants; optical communication equipment; optical fabrication; p-i-n photodiodes; passivation; temperature control; InGaAs:AlInGaAs; InP; current 0.52 muA; high bandwidth wavelength surface normal p-i-n photodiodes; indium gallium arsenide surface normal photodiode; indium phosphide substrate; lattice constant relaxation; mesa passivation process; optical communication systems; parabolic grading; photoresponsivity; temperature-control; voltage -5 V; wavelength 2 mum; Bandwidth; Capacitance; Indium gallium arsenide; Optical fiber amplifiers; Optical fiber devices; Photodiodes; 2 $mu $ m; 2 um; High speed photodiode; InGaAs; high speed photodiode;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/LPT.2015.2416346
Filename
7070709
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