Dual-Wavelength $ϕ$-OFDR Using a Hybrid-Integrated Laser Stabilized to an Integrated SiN Coil Resonator

Mohamad Hossein Idjadi; Stefano Grillanda; Nicolas Fontaine; Mikael Mazur; Kwangwoong Kim; Tzu-Yung Huang; Cristian Bolle; Rose Kopf; Mark Cappuzzo; Kaikai Liu; David A. S. Heim; Andrew Hunter; Karl D. Nelson; Daniel J. Blumenthal

paper

Dual-Wavelength $ϕ$ -OFDR Using a Hybrid-Integrated Laser Stabilized to an Integrated SiN Coil Resonator

arXiv:2411.00237

Abstract

We demonstrate dual-wavelength distributed acoustic sensing over 37 km of standard single-mode fiber using $ϕ$ -OFDR, utilizing a scalable hybrid-integrated dual-wavelength laser chip frequency-locked to a high-Q integrated SiN coil resonator.

3 pages, 4 figures

Dual-Wavelength ϕ-OFDR Using a Hybrid-Integrated Laser Stabilized to an Integrated SiN Coil Resonator

Abstract

Dual-Wavelength $ϕ$ -OFDR Using a Hybrid-Integrated Laser Stabilized to an Integrated SiN Coil Resonator