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4 March 2019 High-performance electric field sensor based on lab-on-fiber and lithium niobate nanophotonics (Conference Presentation)
Maria-Pilar Bernal
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Proceedings Volume 10921, Integrated Optics: Devices, Materials, and Technologies XXIII; 1092116 (2019) https://doi.org/10.1117/12.2507173
Event: SPIE OPTO, 2019, San Francisco, California, United States
Abstract
The work that I will present focuses on the fabrication of non-perturbing E-field sensors based on the electro-optic effect. Lithium Niobate, combined with photonic crystals can increase considerably the material sensitivity to electric fields leading to ultra-compact devices. The target structure exhibits high sensitivity, THz bandwidth ans micrometric spatial resolution. In addition, since the sensor is only fabricated with dielectric materials, it does not perturb the electric field to be measured. In my presentation I will focus on the simulation, fabrication and characterization of the fiber-tip electric field sensor. We have performed simulations in order to study the feasibility where the different fabrication errors are considered.The fabrication is divided into two parts: a first one where we overcome the problem of micromachining photonic crystals on thin film lithium niobate of 700 nm of thickness. In the second part, the integration of the photonic crystal within the fiber facet will be explained. Optical characterization and electrical performance will be shown verifying its different features such as spatial resolution, linearity, electrical sensitivity and bandwidth. The fabricated device shows performances nevev achieved beofre and open up a high spectrum of applications like cold plasma, military, and telelcommunications applications.
Conference Presentation
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Maria-Pilar Bernal "High-performance electric field sensor based on lab-on-fiber and lithium niobate nanophotonics (Conference Presentation)", Proc. SPIE 10921, Integrated Optics: Devices, Materials, and Technologies XXIII, 1092116 (4 March 2019); https://doi.org/10.1117/12.2507173
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KEYWORDS
Electric field sensors
Lithium niobate
Nanophotonics
Photonic crystals
Device simulation
Spatial resolution
Dielectrics
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