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title: "A SiPM-based VLC Receiver for 3.45 Gigabits/s Communication Using OOK Modulation"
date: 2020-11-16T13:26:11+01:00
draft: false
category: paper
excerpt: "IEEE Photonics Conference 2020: a J-30020 SiPM receiver reaches 3.45 Gbps OOK at a BER of 10⁻³, up from the previous SiPM record of 2.4 Gbps."
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::publication[1]

My first paper of my DPhil, presented at the 2020 IEEE Photonics Conference.
It shows that a SiPM with a higher maximum output pulse rate raises the fastest on-off keying (OOK) data rate ~wave:ever achieved~ with a SiPM receiver. :stonks:
The [journal version](/posts/sipm-ook-receiver-3-45-gbps-journal/) extends it with a model of the SiPM's bias current.

## Abstract

Results are presented which show that by using a SiPM with a higher maximum output pulse rate it is possible to increase the highest maximum OOK data rate ever achieved at a BER of $10^{-3}$ from 2.4 Gbits/s to 3.45 Gbits/s.

## Key Findings

Previously, a J-30035 SiPM receiver had reached a maximum OOK data rate of 2.4 Gbps at a BER of $10^{-3}$, despite saturation.
Because the J-30020 has a higher maximum output pulse rate, it achieves the same BER at 3.45 Gbps, a new record for a SiPM receiver.
Saturation means these rates need irradiances above 100 mW/m$^2$, which are not eye safe at 405 nm.
At irradiances more likely in a deployed VLC system, either SiPM supports up to 2 Gbps.
In that regime the higher photon detection efficiency (PDE) of the J-30035 gives it a slightly higher data rate than the J-30020 at the same irradiance.
However, the J-30020 consumes only a fraction of the power of the J-30035 at the same irradiance, owing to its smaller microcells.
That makes the J-30020 the better fit for hosts where power matters, such as smartphones.
SiPMs with narrower output pulses should allow higher data rates still.
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