光纖接入網(wǎng)是近十年來發(fā)展起來的新技術，負責光傳送網(wǎng)寬帶接入用戶最后1 km的傳輸。寬帶光纖接入網(wǎng)從模擬發(fā)展到數(shù)字接入網(wǎng)，光纖/同軸混合網(wǎng)絡和無源光網(wǎng)絡分別為其代表。HFC是上世紀90年代中期發(fā)展起來的技術，已得到了廣泛應用，而PON是最近幾年興起的新技術，包括ATM無源光網(wǎng)絡、以太無源光網(wǎng)絡和千兆無源光網(wǎng)絡，文中指出了它們的關鍵技術和系統(tǒng)特點。
關 鍵 詞 光纖接入網(wǎng); 光纖同軸混合; ATM無源光網(wǎng)絡; 以太無源光網(wǎng)絡; 千兆無源光網(wǎng)絡

Abstract Optical fiber access network is developed rapidly in recent ten years and the new technology solves the last 1 km transmission from optical transmission network to customers. The broadband optical fiber access network is developed from analog to digital system, the representative of analog signal optical fiber access network is HFC (hybrid fiber coaxial) network, and the representative of digital signal optical fiber access network is PON(passive optical network). HFC is a developing technology from the middle 90’s last century and has been used extensively. PON is a new technology risen in recent years. PONs includes APON (ATM PON), EPON (Ethernet PON) and GPON (Gigabit PON). The key techniques and features of these access networks are analyzed and discussed in detail in this paper.
Key words optical fiber access network; HFC; APON; EPON; GPON