Optimal Probing Sequences for Polarization-Multiplexed Coherent Phase OTDR
Christian Dorize, Elie Awwad, Sterenn Guerrier, J\'er\'emie, Renaudier
TL;DR
This paper presents a novel dual-polarization probing method using circularly shifted frequency sweep signals to achieve perfect channel estimation in polarization-multiplexed coherent phase OTDR.
Contribution
It introduces a new probing code design based on circularly shifted frequency sweeps for improved channel estimation in polarization-multiplexed systems.
Findings
Achieves perfect channel estimation with probing length at least twice the fiber round-trip time.
Demonstrates the effectiveness of dual-polarization probing codes in coherent phase OTDR.
Provides a theoretical foundation for optimal probing sequence design.
Abstract
We introduce dual-polarization probing codes based on two circularly shifted frequency sweep signals enabling perfect channel estimation. This is achieved with a probing length equal to at least twice the fiber round-trip propagation time.
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