IEICE Communications Express
Online ISSN : 2187-0136
ISSN-L : 2187-0136
Highly sensitive Raman gain coefficient measurement by detecting spontaneous Raman scattering power for distributed Raman amplification systems
Hiroji MasudaKokoro Kitamura
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2017 Volume 6 Issue 12 Pages 661-666

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Abstract

We propose a highly sensitive method that can safely measure the Raman gain coefficient spectrum by detecting the spontaneous Raman scattering emitted from the transmission fiber pumped by a single-polarization laser-diode light source in distributed Raman amplification systems. With the proposed method, we have successfully obtained an accurate Raman gain coefficient spectrum with a significantly low pump power of ∼0.35 mW at a small Raman gain of 0.01 dB.

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© 2017 The Institute of Electronics, Information and Communication Engineers
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