Single-Ended Fiber Latency Measurement with Picosecond-Accuracy Using Correlation OTDR

TL;DR

This paper demonstrates a correlation OTDR technique capable of measuring fiber latency with picosecond accuracy using a 10 Gbit/s bit rate, validated through chromatic dispersion measurement of a 2.2 km fiber.

Contribution

It introduces a novel correlation OTDR method achieving picosecond-level fiber latency measurement accuracy.

Findings

Achieved fiber latency measurement with a few picoseconds accuracy.

Validated the method by measuring chromatic dispersion of a 2.2 km fiber.

Demonstrated the technique at a 10 Gbit/s bit rate.

Abstract

Correlation OTDR with a bit rate of 10 Gbit/s is used to measure fiber latency with an accuracy of a few picoseconds. The concept is demonstrated measuring the chromatic dispersion of a 2.2-km fiber section.