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We propose a frequency-reusable architecture for fiber-extend copper lines with spectrally efficient multiple copper line monitoring. In-service simultaneous multi-copper and fiber monitoring is possible with the right choice of frequency bands, a result backed by the Error Vector Magnitude measurement of data channels in simultaneous coexistence with monitoring channels. The proposed monitoring method...
In this paper, we describe an efficient method for monitoring fiber links utilizing sub-carrier multiplexing. By assigning a void sub-carrier frequency band for monitoring purposes, the method reuses the data transmitter without any impact on data transmission and provides capability of in-service reflectometry measurements of fiber optic lines with 10-m spatial resolution and 1.0-dB fault detection...
In this paper we give an overview of different approaches to reduce the influence of the interferometric crosstalk in a Passive Optical Network employing Wavelength Division Multiplexing (WDM-PON) and a Reflective Semiconductor Optical Amplifier-based (RSOA) transceiver in the Optical Network Unit (ONU). Key advantages and disadvantages of each method are given.
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