Monitoring Raman Amplified Optical Links While In Service

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Erbium-Doped Fiber Amplifier (EDFA) and Raman amplifiers are the two main solutions for optical signal amplification in long distance, optical communication systems. While EDFAs are still the most deployed amplifiers, Raman-based solutions are gaining momentum in the metro/ core transmission market. Some of the main benefits include the wider wavelength range than EDFA (limited to 1525-1565 nm and 1570 - 1610 nm) and the use of the transmission fiber as the amplification medium. This paper explains how Raman amplified fiber can be monitored with the VIAVI Solutions Optical Network Monitoring System (ONMSi).