10 October 2012 Balanced InGaAs/InP avalanche photodiodes for single photon detection
Author Affiliations +
Abstract
Abstract—We demonstrate a sinusoidally-gated InGaAs/InP photodiode pair operated at wavelength of 1310 nm with high photon detection efficiency (PDE) and low dark count rate (DCR). The photodiode pair is biased in a balanced scenario so that the common component of the output signal is cancelled. The concept of balanced photodiodes helps improve detection efficiency while canceling the common mode signal, which, in this case, is the capacitive response of the photodiodes. In conventional sinusoidal gating, an extra component, – an RF filter (or several) at the gating frequency, is utilized to filter out the gating signal and leave the avalanche signal for detection. For this configuration, sinusoidally-gated counting systems are restricted to a single frequency. With the balanced single photon diodes (SPAD), sinusoidal gating within a continuous frequency range is feasible. A printed circuit with symmetric layout of two bias tees was fabricated on a duroid board to enable the application of AC and DC signals for the dual SPADs. At a laser repletion rate of 1 MHz and temperature of 240 K the DCR and PDE were 58 kHz and 43%, respectively. Afterpulsing probability was lower compared with a sinusoidually-gated single SPAD. Jitter of 240 ps was achieved with 1 photon per pulse for an excess bias of 1.6%.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zhiwen Lu, Zhiwen Lu, Wenlu Sun, Wenlu Sun, Xiaoguang Zheng, Xiaoguang Zheng, Joe Campbell, Joe Campbell, Xudong Jiang, Xudong Jiang, Mark A. Itzler, Mark A. Itzler, } "Balanced InGaAs/InP avalanche photodiodes for single photon detection", Proc. SPIE 8460, Biosensing and Nanomedicine V, 84601H (10 October 2012); doi: 10.1117/12.2000154; https://doi.org/10.1117/12.2000154
PROCEEDINGS
7 PAGES


SHARE
RELATED CONTENT


Back to Top