BACKSCATTERING OPTICAL AMPLIFICATION DEVICE, OPTICAL PULSE TESTING DEVICE, BACKSCATTERING OPTICAL AMPLIFICATION METHOD AND OPTICAL PULSE TESTING METHOD

摘要

The purpose of the present invention is to provide a backscattering optical amplification device, optical pulse testing device, backscattering optical amplification method and optical pulse testing method which amplify a desired propagation mode of Rayleigh backscattered light at a desired gain via stimulated Raman scattering in a fiber under test where a plurality of propagation modes exist. This backscattering optical amplification device subjects a fiber under test to the input of a probe pulse in a desired propagation mode, and thereafter, when the pump pulse is incident in a plurality of propagation modes, separately controls the pump pulse power, incidence timing and pulse width for each propagation mode.