Co-Propagating Dual-Order Distributed Raman Amplifier Utilizing Incoherent Pumping

We propose a distributed Raman amplifier available for dual-order co-propagating configuration with low-relative intensity noise (RIN) transfer. The first-order and second-order pumps are composed of incoherent and coherent light sources, respectively. By using the incoherent light source as a first...

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Veröffentlicht in:	IEEE photonics technology letters 2017-04, Vol.29 (7), p.567-570
Hauptverfasser:	Morimoto, Masahito, Ogoshi, Haruki, Yoshida, Junji, Takasaka, Shigehiro, Sano, Akihide, Miyamoto, Yutaka
Format:	Artikel
Sprache:	eng
Schlagworte:	Amplification co-propagating Coherent light Division dual-order Gain incoherent pump Light sources Multiplexing Noise intensity Noise propagation Optical polarization Optical pumping Q-factor Quadrature amplitude modulation Raman amplifier Relative intensity noise Stimulated emission Wavelength division multiplexing
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Zusammenfassung:	We propose a distributed Raman amplifier available for dual-order co-propagating configuration with low-relative intensity noise (RIN) transfer. The first-order and second-order pumps are composed of incoherent and coherent light sources, respectively. By using the incoherent light source as a first-order pump, RIN transfer can be reduced. A semiconductor optical amplifier-based first-order incoherent light source for the configuration has been developed. The results of the RIN measurement and 22.5-Gbaud polarization-division multiplexing 16 quadrature amplitude modulation (PDM-16QAM) transmission experiment over 2720 km in a re-circulating loop show that the proposed configuration will be effective for a practical low-noise co-propagating Raman amplifier.
ISSN:	1041-1135 1941-0174
DOI:	10.1109/LPT.2017.2655043