Speakers
Description
The Circular Electron-Positron Collider (CEPC), a large-scale international particle physics
facility proposed and led by Chinese scientists, centers around a high-energy circular
accelerator designed to provide electron-positron collision environments. This study
proposes a multi-channel free-space optical (FSO) communication system based on
wavelength division multiplexing (WDM). The performance of the proposed system has been
experimentally validated in a laboratory environment. Experimental results demonstrated a
maximum data transmission rate of 118 Gbps over a distance of 1.5 meters, with multi-
channel clock synchronization achieving sub-nanosecond accuracy and synchronization
precision within 20 picoseconds.
Summary (500 words)
This study presents a multi-channel data and clock transmission system based on free-space optical (FSO) communication, achieving a maximum data rate of 118 Gbps over a 1.5-meter distance link, with a single-channel bandwidth of 10 Gbps, a bit error rate (BER) below 10⁻¹⁴, and channel crosstalk of approximately 34 dB.
The system also realizes multi-channel clock synchronization. Test results demonstrate that the FSO communication system achieves sub-nanosecond synchronization accuracy and synchronization precision within 20 picoseconds.
This study provides a novel approach for wireless readout in high-energy physics experiments, demonstrating strong potential for practical application.
