Fabry-Perot Sensor based on Two Coupled Microspheres for Strain Measurement
Fabry-Perot Sensor based on Two Coupled Microspheres for Strain Measurement
Date
2017
Authors
Catarina Silva Monteiro
Kobelke,J
Schuster,K
Bierlich,J
Orlando Frazão
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Abstract
A Fabry-Perot based sensor with two coupled hollow microspheres is presented. The sensor was fabricated using fusion splicing techniques, enabling a low-cost, highly reproducible, production. The coupling of the two microspheres gives rise to a highly sensitive strain sensor, reaching a sensitivity of 4.07 pm/mu epsilon. The allsilica composition leads to a low thermal sensitivity, making the proposed structure suitable applications in environments with varying external conditions.