Limits and prospects for long-baseline optical fiber interferometry

Hilweg, Christopher; Shadmany, Danial; Walther, Philip; Mavalvala, N.; Sudhir, V.

doi:10.1364/optica.470430

Cited by 10 publications

(5 citation statements)

References 174 publications

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“…We also point out that optical fibres were proposed to create the long-baseline interferometric readout, but this would come at a loss of sensitivity, e.g. due to fundamental thermal noise of the fibre and scattering [62]. A fibre interferometer is not suitable for GW measurements.…”

Section: Long-baseline Laser-interferometric Gravitational-wave Measu...mentioning

confidence: 99%

Opportunities and limits of lunar gravitational-wave detection

Cozzumbo,

Mestichelli,

Mirabile

et al. 2024

Phil. Trans. R. Soc. A.

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A new era of lunar exploration has begun with participation of all major space agencies. This activity brings opportunities for revolutionary science experiments and observatories on the Moon. The idea of a lunar gravitational-wave detector was already proposed during the Apollo programme. The key characteristic of the Moon is that it is seismically extremely quiet. It was also pointed out that the permanently shadowed regions at the lunar poles provide ideal conditions for gravitational-wave detection. In recent years, three different detector concepts were proposed with varying levels of technological complexity and science potential. In this paper, we confront the three concepts in terms of their observational capabilities based on a first more detailed modelling of instrumental noise. We identify important technological challenges and potential show-stoppers. This article is part of a discussion meeting issue ‘Astronomy from the Moon: the next decades (part 2)’.

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Section: Long-baseline Laser-interferometric Gravitational-wave Measu...mentioning

confidence: 99%

Opportunities and limits of lunar gravitational-wave detection

Cozzumbo,

Mestichelli,

Mirabile

et al. 2024

Phil. Trans. R. Soc. A.

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“…Classifying purely on perturbation duration results in a wide decision margin of 661 s for offline detection and 160 s for online detection, enabling preemptive rerouting of network traffic before network flaps occur. as previously discussed, DAS and laser interferometry require dedicated hardware or ultra-stable laser sources to collect sensing measurements [68,38], a significant barrier to achieving widespread coverage.…”

Section: Wide-scale Seismic Monitoring With Sop Sensingmentioning

confidence: 99%

Polarization sensing over terrestrial optical fiber networks

Carver,

Zhou

2024

Preprint

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Wide-scale sensing of natural and human-made events is critical for protecting against environmental disasters and reducing the monetary losses associated with telecommunication service downtime. However, achieving dense sensing coverage is difficult given the high deployment overhead of modern sensor networks. In this work, we offer an in-depth exploration of state of polarization (SOP) sensing over fiber-optic networks using unmodified optical transceivers, establishing a strong correlation with ground truth distributed acoustic sensing (DAS). To validate our sensing methodology, we collect 85 days of SOP and DAS measurements along two colocated, 50km fiber-optic cables in Southern California. We then examine how SOP sensing can improve network reliability by accurately modeling overall network health and preemptively detecting loss of traffic. Finally, we explore the feasibility of wide-scale seismic monitoring with SOP sensing, showcasing the SOP perturbations following low-intensity earthquakes, and the potential to more than double seismic monitoring coverage in Southern California alone.

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“…A laser interferometer whose optics are mounted on the lunar surface is proposed to observe GW signals. A more detailed analysis of the geophysical signals is proposed to be achieved with a network of optical fibers (Hilweg et al 2022). The mounts of the laser optics can be adapted from laser retroreflectors, which are being developed independently for a CLPS mission launch (Intuitive Machines n. 3, or IM-3) to the Reiner Gamma site (59W, 7N) in 2024 (dubbed CP11), under a NASA-ESA MoU.…”

Section: The Lunar Seismic and Gravitational Antenna (Lsga)mentioning

confidence: 99%

Lunar Gravitational-Wave Detection

Branchesi,

Falanga,

Harms

et al. 2023

Space Sci Rev

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A new era of lunar exploration has begun bringing immense opportunities for science as well. It has been proposed to deploy a new generation of observatories on the lunar surface for deep studies of our Universe. This includes radio antennas, which would be protected on the far side of the Moon from terrestrial radio interference, and gravitational-wave (GW) detectors, which would profit from the extremely low level of seismic disturbances on the Moon. In recent years, novel concepts have been proposed for lunar GW detectors based on long-baseline laser interferometry or on compact sensors measuring the lunar surface vibrations caused by GWs. In this article, we review the concepts and science opportunities for such instruments on the Moon. In addition to promising breakthrough discoveries in astrophysics and cosmology, lunar GW detectors would also be formidable probes of the lunar internal structure and improve our understanding of the lunar geophysical environment.

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Limits and prospects for long-baseline optical fiber interferometry

Cited by 10 publications

References 174 publications

Opportunities and limits of lunar gravitational-wave detection

Opportunities and limits of lunar gravitational-wave detection

Polarization sensing over terrestrial optical fiber networks

Lunar Gravitational-Wave Detection

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