| 摘要 |
A method is described for wavelength-division multiplexed optical fiber networks whereby an unused portion of the optical spectrum is used to transmit OAM&P information internodally. An extra port of one or more of the optical multiplexers and demultiplexers accesses the unused portion of the optical spectrum. The method for the optical service channel avoids the requirement for ancillary filters so that adding and dropping the service channel does not increase the loss experienced in the wavelength-multiplexed signals.
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