Polarization-based plasmonic sensors, systems, and methods
AssigneesUniversity of Southern California, California Institute of Technology
InventorsChieh-Feng Chang, Scott E. Fraser
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Abstract
Disclosed are plasmonic sensors, and systems and methods related to plasmonic sensors. The plasmonic sensors include 2024/182797 polarization-maintaining optical fibers to avoid cross-talk between wanted and unwanted components within a plasmonic response signal. The plasmonic sensors, systems, and methods can involve detecting components within a signal outside of the polarization direction of an excitation signal for reducing issues found in the signal matching the polarization direction of the excitation signal. The plasmonic sensors, systems, and methods use specific lattice arrangements of plasmonic material nanostructures. WO
Claims25
A plasmonic sensor comprising:
- a polarization-maintaining optical fiber having a proximal end and a distal end;
- and
- plasmonic material nanostructures coupled to the distal end of the polarization-maintaining optical fiber.
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A system comprising:
- a laser configured to provide an excitation signal having a first polarization direction;
- a plasmonic sensor configured to generate a response signal responsive to the excitation signal, the response signal having the first polarization direction and a second polarization direction, different from the first polarization direction;
- and
- a spectrometer configured to measure the response signal with respect to the second polarization direction distinct from the first polarization direction.
A method comprising:
- providing an excitation signal to a plasmonic sensor, the excitation signal having a first polarization direction;
- receiving a response signal from the plasmonic sensor, the response signal having the first polarization direction and a second polarization direction, different form the first polarization direction;
- and
- measuring the response signal for an optical property based only on the second polarization direction.
Dependencies are inferred from the claim text.