Open AccessUni-traveling-carrier variable confinement waveguide photodiodes
Author(s) -
Jonathan Klamkin,
Shan M. Madison,
D.C. Oakley,
A. Napoleone,
F.J. O'Donnell,
Michael Sheehan,
L.J. Missaggia,
J. Caissie,
Jason J. Plant,
P Juodawlkis
Publication year - 2011
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.010199
Subject(s) - photodiode , optics , photocurrent , materials science , optoelectronics , waveguide , saturation current , optical power , bandwidth (computing) , physics , voltage , telecommunications , laser , quantum mechanics , computer science
Uni-traveling-carrier waveguide photodiodes (PDs) with a variable optical confinement mode size transformer are demonstrated. The optical mode is large at the input for minimal front-end saturation and the mode transforms as the light propagates so that the absorption profile is optimized for both high-power and high-speed performance. Two differently designed PDs are presented. PD A demonstrates a 3-dB bandwidth of 12.6 GHz, and saturation currents of 40 mA at 1 GHz and 34 mA at 10 GHz. PD B demonstrates a 3-dB bandwidth of 2.5 GHz, a saturation current greater than 100 mA at 1 GHz, a peak RF output power of + 19 dBm, and a third-order output intercept point of 29.1 dBm at a photocurrent of 60 mA.