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Proceedings Paper

A novel special optical waveguide structure with magneto-optic nonreciprocal phase shift under transversely applied magnetic field
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Paper Abstract

A novel special waveguide sensor, which is very sensitive to magnetic field, is proposed. This novel special wave guide is combined by two kinds material, YIG polymer and Bi:YIG polymer. The two beam lights counter-propagating in this kind of waveguide can generate large nonreciprocal phase shift. We designed the sensor structure, simulated the propagated characteristic of the structure. Based on the simulations, we concluded that waveguide with the core divided by two half circles can improve the sensitive to the magnetic field which is parallel to the interface of the two semicircles. We design a Sagnac interference demonstration with the light wavelength of 1550 nm, two difference-resonant loops. This sensor with 0.51pTesla-level sensitivity can be used in ultra-low magnetic field detection.

Paper Details

Date Published: 27 March 2019
PDF: 6 pages
Proc. SPIE 10970, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019, 1097030 (27 March 2019); doi: 10.1117/12.2522615
Show Author Affiliations
Dengwei Zhang, Zhejiang Univ. (China)
Northwestern Univ. (United States)
Liang Cui, Zhejiang Univ. (China)
Heming Wei, Northwestern Univ. (United States)
Abhishek K. Kottaram Amrithanath, Northwestern Univ. (United States)
Sridhar Krishnaswamy, Northwestern Univ. (United States)
Xiaowu Shu, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 10970:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019
Jerome P. Lynch; Haiying Huang; Hoon Sohn; Kon-Well Wang, Editor(s)

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