OFDM-PON(正交频分复用无源光网络)是目前光接入网研究热点之一。文章简述了OFDM-PON技术的研究背景，阐明了OFDM-PON的技术原理、网络架构和关键技术，对基于OFDM-PON的业务及带宽调度进行了研究分析，并对OFDM-PON技术的应用前景进行了展望。研究表明，与传统的PON相比，OFDM-PON系统不仅传输带宽大幅度提升，而且可以实现基于子载波、调制格式和时间的三维业务及带宽调度。

The Orthogonal Frequency-Division Multiplexing Passive Optical Network (OFDM-PON) technology is one of the current research focuses in optical access networks. This paper first briefly describes its study background, explains its principle, network architecture and key technologies. Then it studies and analyzes OFDM-PON-based services and bandwidth scheduling and predicts the prospects of its applications. Study results show that compared with the conventional PON systems, OFDM-PON system has its transmission bandwidth dramatically increased and realizes subcarrier-, modulation format-, and time slot-based services and bandwidth scheduling.