Optical nanofiber temperature monitoring via double heterodyne detection

P. Anderson; S. Jalnapurkar; E. S. Moiseev; D. Chang; P. E. Barclay; A. Lezama; A. I. Lvovsky

doi:10.1063/1.5027743

journal article·2018-05-01Open access

Optical nanofiber temperature monitoring via double heterodyne detection

P. Anderson, S. Jalnapurkar, E. S. Moiseev, D. Chang, P. E. Barclay, A. Lezama, A. I. Lvovsky

AIP Advances· Volume 8· Issue 5

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Source abstract

Abstract

Tapered optical fibers (nanofibers) whose diameters are smaller than the optical wavelength are very fragile and can be easily destroyed if excessively heated by energy dissipated from the transmitted light. We present a technique for monitoring the nanofiber temperature using two-stage heterodyne detection. The phase of the heterodyne output signal is determined by that of the transmitted optical field, which, in turn, depends on the temperature through the refractive index. From the phase data, by numerically solving the heat exchange equations, the temperature distribution along the nanofiber is determined. The technique is applied to the controlled heating of the nanofiber by a laser in order to remove rubidium atoms adsorbed on its surface that substantially degrade its transmission. Almost 90% of the nanofiber’s original transmission is recovered.

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Research context

Nanomaterials

OpenAlex topics: Mechanical and Optical Resonators · Quantum optics and atomic interactions · Advanced Fiber Optic Sensors

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute for Quantum Science and Technology, University of Calgary 1 , Calgary, AB T2N 1N4, Canada

Instituto de Física, Facultad de Ingeniería, Universidad de la República 2 , J. Herrera y Reissig 565, 11300 Montevideo, Uruguay

International Center for Quantum Optics and Quantum Technologies (Russian Quantum Center), Skolkovo 3 , Moscow 143025, Russia

Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology 4 , Chengdu, Sichuan 610054, China

Funding

Canadian Network for Research and Innovation in Machining Technology, Natural Sciences and Engineering Research Council of Canada

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