Title :
All-Silicon 1.55-μm High-Resolution Photon Counting and Timing
Author :
Tosi, Alberto ; Dalla Mora, Alberto ; Zappa, Franco
Author_Institution :
Dipt. di Elettron. e Inf., Politec. di Milano, Milan, Italy
Abstract :
We investigate the performances at 1.55-μm wavelength of silicon single photon avalanche diodes (SPADs), demonstrating their suitable applicability in laser characterizations and ultra-sensitive autocorrelation measurements. We investigate the photon detection efficiency and the two-photon absorption process of both lightly doped thick SPADs and heavily doped thin SPADs. Finally, we report the accurate pulse-shape characterization of a 1.55-μm pulsed laser by means of a thin silicon SPAD that exploits the best intrinsic time resolution of 25 ps with wide dynamic range and low measurement time.
Keywords :
avalanche photodiodes; laser beams; laser variables measurement; photodetectors; photon counting; two-photon processes; Si; avalanche photodiodes; laser characterization; photon detection efficiency; photon timing; pulse-shape characterization; silicon single photon avalanche diodes; thin silicon SPAD; time 25 ps; time-correlated single photon counting; two-photon absorption process; ultra-sensitive autocorrelation measurement; wavelength 1.55 mum; Absorption; Autocorrelation; Diodes; Dynamic range; Optical pulses; Performance evaluation; Pulse measurements; Silicon; Timing; Wavelength measurement; Avalanche photodiodes; correlation; optical fibers; single-photon avalanche diode (SPAD); time-correlated single photon counting (TCSPC);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.2005788
