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Development of Whispering Gallery Mode Polymeric Micro-optical Electric Field Sensors
Published on: January 29, 2013
Electric-field sensors utilizing coupling between a D-fiber and an electro-optic polymer slab
Spencer Chadderdon1, Richard Gibson, Richard H Selfridge
1Department of Electrical and Computer Engineering, Brigham Young University, Provo, Utah 84602, USA.
Applied Optics
|July 12, 2011
Summary
This study demonstrates electric field sensing using a polymer slab-coupled optical fiber sensor (SCOS). Inorganic materials are optimal for slab waveguides due to their low RF permittivity and high electro-optic coefficient.
Area of Science:
- Photonics
- Materials Science
- Sensor Technology
Background:
- Optical fiber sensors offer sensitive detection methods.
- Electric field sensing is crucial for various applications.
- Slab-coupled optical fiber sensors (SCOS) present a novel approach.
Purpose of the Study:
- To analyze electric field sensing capabilities of SCOS.
- To identify optimal materials for SCOS slab waveguides.
- To fabricate and test a polymer-based SCOS.
Main Methods:
- Detailed analysis of SCOS for electric field sensing.
- Material selection favoring inorganic materials for slab waveguides.
- Fabrication of a polymer SCOS using hot embossing with AJL chromophore in amorphous polycarbonate.
Main Results:
- A polymer SCOS was successfully fabricated with a 50 μm thick uniform slab waveguide.
- The sensor exhibited a resonance slope of ΔP/Δλ=6.83E5 W/m.
- A resonance shift of Δλ/E=1.47E-16 m(2)/V was achieved.
Conclusions:
- Inorganic materials are best suited for slab waveguides in SCOS due to their properties.
- The fabricated polymer SCOS demonstrates effective electric field sensing.
- The study validates the potential of SCOS for precise electric field measurement.
