| 摘要 |
The present invention relates to a remote node and a central office node for protecting a wavelength division multiplexing ring network. The remote node according to the present invention includes at least four filters, at least two optical power dividers, at least four optical fiber ports for communicating with an optical fiber of a bidirectional path used in the wavelength division multiplexing ring network, and at least two optical fiber ports for communicating with a remote light transceiver used in the wavelength division multiplexing ring network. |
