Raman-Enhanced Phase-Sensitive Fibre Optical Parametric Amplifier
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AbstractPhase-sensitive amplification is of great research interest owing to its potential in noiseless amplification. One key feature in a phase-sensitive amplifier is the gain extinction ratio defined as the ratio of the maximum to the minimum gains. It quantifies the capability of the amplifier in performing low-noise amplification for high phase-sensitive gain. Considering a phase-sensitive fibre optical parametric amplifier for linear amplification, the gain extinction ratio increases with the phase-insensitive parametric gain achieved from the same pump. In this work, we use backward Raman amplification to increase the phase-insensitive parametric gain, which in turn improves the phase-sensitive operation. Using a 955 mW Raman pump, the gain extinction ratio is increased by 9.2 dB. The improvement in the maximum phase-sensitive gain is 18.7 dB. This scheme can significantly boost the performance of phase-sensitive amplification in a spectral range where the parametric pump is not sufficiently strong but broadband Raman amplification is available.
All Author(s) ListFu XL, Guo XJ, Shu C
Journal nameScientific Reports
Detailed descriptiondoi:10.1038/srep20180.
Volume Number6
LanguagesEnglish-United Kingdom
Web of Science Subject CategoriesMultidisciplinary Sciences; Science & Technology - Other Topics

Last updated on 2021-13-09 at 00:45