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Scanning Light Scattering Profiler (SLPS) Based Methodology to Quantitatively Evaluate Forward and Backward Light Scattering from Intraocular Lenses

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Fiber-optic-graded-index-lens absorbance sensor with wavelength-scanning capability.

D A Landis, C J Seliskar, W R Heineman

|October 2, 2010

Summary

A novel optical-fiber absorbance sensor with a graded-index lens offers tailored performance for broad wavelength regions. This cost-effective sensor demonstrates high optical efficiency and linear response for diverse applications.

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Area of Science:

Optics
Spectroscopy
Biomedical Engineering

Background:

Absorbance measurements are crucial in various scientific and medical fields.
Existing optical-fiber sensors may have limitations in performance, cost, or applicability.
Development of versatile and efficient absorbance sensing technology is ongoing.

Purpose of the Study:

To describe a novel single optical-fiber absorbance sensor incorporating a graded-index lens.
To present laboratory evaluations of the sensor's performance characteristics.
To highlight the sensor's adaptability and potential applications.

Main Methods:

Fabrication of single optical-fiber absorbance sensors with integrated graded-index lenses.
Tailoring sensor parameters such as wavelength region, path length, and physical size.
Laboratory evaluation of sensor performance, including spectral response and linearity.
Comparative analysis of optical efficiency against other sensor configurations.

Main Results:

The graded-index-lens-based sensor provides true absorbance spectra across the 420-850 nm wavelength range.
Sensors exhibit a linear response over a wide absorbance range, even without optical coatings.
Demonstrated high optical efficiency compared to alternative sensor designs.
Successful laboratory evaluations of sensors with varied dimensions and path lengths.

Conclusions:

The developed optical-fiber absorbance sensor offers a versatile, cost-effective solution.
Its high optical efficiency and linear response make it suitable for demanding applications.
Potential uses include hazardous environments, remote monitoring, and in vivo medical diagnostics.