High resolution optical time domain reflectometer based on 1.55um up-conversion photon-counting module
Matthieu Legre, Rob Thew, Hugo Zbinden, Nicolas Gisin
TL;DR
This paper presents a high-resolution optical time domain reflectometer at 1.55um using a novel up-conversion photon-counting module, achieving centimetre resolution over tens of kilometres.
Contribution
It introduces a new OTDR system based on a low-jitter up-conversion detector with improved resolution and accuracy at 1.55um.
Findings
Achieves centimetre resolution over tens of kilometres.
Utilizes a PPLN waveguide for wavelength conversion.
Demonstrates high accuracy and low jitter detection.
Abstract
We implement a photon-counting Optical Time Domain Reflectometer (OTDR) at 1.55um which exhibits a high 2-point resolution and a high accuracy. It is based on a low temporal-jitter photon-counting module at 1.55um. This detector is composed of a periodically poled Lithium niobate (PPLN) waveguide, which provides a wavelength conversion from near infrared to visible light, and a low jitter silicon photon-counting detector. With this apparatus, we obtain centimetre resolution over a measurement range of tens of kilometres.
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