异步光信号的并行分配
Parallel Distribution of Asynchronous Optical Signals
摘要：
采用并行光链路技术研制了一种用于甚高能辐射成像望远镜阵列系统（VERITAS）触发信号分配的11通道数字异步收发器（DAT）。组合逻辑功能在Xilinx Spartan 3 FPGA中实现，提供了适用于未来大气Cerenkov探测器和其他高能天体粒子实验的通用解决方案。该器件无死区时间，通道之间的时滞最小为1.6 ns。每个DAT通道上的抖动在95%的时间内小于0.8 ns，允许望远镜和相隔数百米的中央触发系统之间的通信，而不会限制阵列性能。
英文摘要：
An eleven channel digital asynchronous transceiver (DAT) employing parallel optical link technology has been developed for trigger signal distribution across the Very Energetic Radiation Imaging Telescope Array System (VERITAS). Combinatorial logic functions are implemented in Xilinx Spartan 3 FPGAs, providing a versatile solution adaptable for use in future atmospheric Cerenkov detectors and other high-energy astroparticle experiments. The device is dead-time free and introduces a minimal skew of 1.6 ns between channels. The jitter on each DAT channel is less than 0.8 ns 95% of the time, allowing communication between telescopes and a central trigger system separated by hundreds of meters, without limiting array performance.
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