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1引言最近三年以来,PON的规模应用取得了大踏步的加速发展。有关统计表明,在2008年的1季度,全球实际部署的FTTx市场中,只有大约10%的部分是采用的有源以太网技术,其余的
1 Introduction In the recent three years, the scale of PON has made strides in its application. Statistics show that in the first quarter of 2008, only about 10% of the FTTx markets actually deployed in the world were powered by active Ethernet technologies. The remaining