Abstract
A low-noise high-speed InGaAs/InP-based single-photon detector was demonstrated with a double-self-differencing spike signal cancellation technique. A photon-number resolving method was used to analyze the ratio of avalanche signal to background noise. By adding a post-self-differencing circuit to the pre-self-differencing circuit, the signal to noise ratio was improved by 11.0 dB. The typical error count probability was as low as 2.1% and 6.4% at the detection efficiency of 20.6% and 30.5%, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 7010-7018 |
| Number of pages | 9 |
| Journal | Optics Express |
| Volume | 18 |
| Issue number | 7 |
| DOIs | |
| State | Published - 29 Mar 2010 |