| 摘要 |
<p>The present invention relates to an optical fiber access network and a communication protection method thereof. The optical fiber access network comprises an optical fiber communication system, a wireless communication system, a communication service switch device (8), a second optical network unit (6) and protection optical fiber (91,92). The protection optical fiber (91,92) is used to protect the optical fiber line between the optical line terminal (1) and the optical branching divider (2) in the optical fiber communication system. At the same time, the wireless communication system is introduced to protect the optical fiber between the optical branching divider (2) and the optical network unit (3) in the optical fiber communication system. The protection optical fiber or the wireless communication system is used to protect the communication service respectively when there is a broken failure between the optical line terminal (1) and the optical network unit (3) in the optical fiber communication system. This invention overcomes the limit of the resource, such as pipe, cable, and so on. It can protect communication service of the optical fiber communication system efficiently, and improve the bandwidth utility of the communication system.</p> |
