| Autor: |
Salvatore Pes, Jean-Pierre Rostaing, L. Mathieu, S. Gout, Sébastien Renet, P. Ballet, Pierre Bleuet, Jean-Louis Santailler, Jean-Alain Nicolas, A. Vandeneynde, J. le Perchec, Julie Abergel, J. Rothman |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
International Conference on Space Optics — ICSO 2020. |
| DOI: |
10.1117/12.2600012 |
| Popis: |
In the present communication, the characterization results of an in-house developed four-quadrants detection module based on HgCdTe APDs and a Si-CMOS ROIC pre-amplifier is discussed. The module has been designed to be employed as high data rate ground-segment detector for 1.55 μm long-distance free-space optical communication links in the framework of a project funded by the European Space Agency. The detector is characterized by a multiplication gain in excess of M = 150, a ROIC input referred noise of Ne = 45 electrons rms and a measured bandwidth of BW = 450 MHz. These characteristics enable the linear-mode detection of meso-photonic states ranging from tens of photons per pulse down to the single-photon level at high count rates exceeding 500 MHz per quadrant (and 2 GHz if the signal is dispatched over all four-quadrants). For the present module, the performance for PPM and OOK modulation formats was estimated and its potentiality for long-distance free-space optical communications employing these modulation formats was validated. In particular, for the PPM format, a detection probability of 0.9 and a false alarm probability of 10-2 , a minimum PPM slot width of 500 ps and a temporal jitter with a FWHM ~ 160 ps were estimated, for an incident photonic state with 10 photons/pulse. The potentiality of the detector for 625 Mbps OOK modulation format was also evaluated and compared with a quantum limited situation. In this case, a -3.9 dB penalty from the quantum limited BER was obtained. A new generation of detectors is currently in development, which is expected to further improve the performance. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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