本文评述了甚高速光纤数据传输技术,估价了环路总线的数据率极限。单信道传输的最高数据率估算在5～10千兆比特/秒范围内,但对于并行互连线路或载频复用线路,总线容量可增至100千兆比特/秒或更大。在高数据率干线和相对低速终端之间,本文建议用循环光纤环路作缓冲器,并据此原理提出了一个总线终端设计。 This article reviews very high speed optical fiber data transmission techniques and evaluates the data rate limits of the loop bus. The maximum data rate for single channel transmission is estimated to be in the range of 5 to 10 gigabits per second, but the bus capacity can be increased to 100 gigabits per second or greater for parallel interconnects or carrier frequency multiplex lines. In the high data rate between the main line and the relatively low-speed terminal, this paper recommends using a loop fiber loop as a buffer, and based on this principle proposed a bus terminal design.