| 摘要 |
The present invention provides a fault detection method and device of an optical distribution network, and an optical network system. At least one optical identifier equipment is disposed on a backbone fiber and is disposed on each branch fiber in the optical distribution network, and the optical identifier equipment uniquely identifies the backbone fiber through an address code and uniquely identifies each branch fiber through an address code. An optical signal returned from each of optical identifier equipment in the optical distribution network is received and analyzed, and then an address code of each of optical identifier equipment is obtained; and it is detected whether a fiber corresponding to the address code has a fault according to the obtained address code of each of optical identifier equipment. The stability of a passive optical network PON system is improved.
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