Measuring absolute spectral radiance using an Erbium Doped Fibre Amplifier
Bruno Sanguinetti, Thiago Guerreiro, Fernando Monteiro, Nicolas Gisin, and Hugo Zbinden
TL;DR
This paper presents a method to measure the spectral radiance of a source absolutely using an Erbium Doped Fibre Amplifier, enabling calibration without a reference and suitable for telecom applications.
Contribution
The paper introduces a reproducible fiber-optic device for absolute spectral radiance measurement at telecom wavelengths without requiring a reference.
Findings
Device allows absolute spectral radiance measurement from 1nW to 1μW.
Compatible with standard fiber-optic components.
Useful for calibrating powermeters and spectrometers.
Abstract
We describe a method to measure the spectral radiance of a source in an absolute way without the need of a reference. Here we give the necessary detail to allow for the device to be reproduced from standard fiber-optic components. The device is suited for fiber-optic applications at telecom wavelengths and calibration of powermeters and spectrometers at light levels from 1nW to 1uW.
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