Multiple Beat-Noise Suppression in Polarization-Multiplexed Pump Light for Forward-Pumped Raman Amplifier

• Published in: Journal of lightwave technology Vol. 41; no. 12; pp. 1 - 6
• Main Authors: Kawakami, Hiroto, Kobayashi, Takayuki, Kisaka, Yoshiaki
• Format: Journal Article
• Language: English
• Published: New York IEEE 15.06.2023; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Amplification; Amplifiers; Bragg gratings; Data transmission; Depolarization; Fiber gratings; Luminous intensity; Noise intensity; Noise measurement; Noise reduction; Optical amplifier; Optical amplifiers; Optical fiber amplifiers; optical fiber communication; Optical polarization; Optical pumping; Polarization; Probes; Raman scattering; Relative intensity noise; Signal to noise ratio; Stimulated emission

In this paper, we discuss the beat-noise induced by a distributed Raman amplifier system with forward pumping and propose a technique to suppress it. To construct a Raman amplifier, several techniques are required. First, the pump light must be depolarized due to the polarization dependence of the R...