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Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 70,
  • Issue 5,
  • pp. 756-765
  • (2016)

Enhancing Sensitivity of a Miniature Spectrometer Using a Real-Time Image Processing Algorithm

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Abstract

A real-time image processing algorithm is developed to enhance the sensitivity of a planar single-mode waveguide miniature spectrometer with integrated waveguide gratings. A novel approach of averaging along the arcs in a curved coordinate system is introduced which allows for collecting more light, thereby enhancing the sensitivity. The algorithm is tested using CdSeS/ZnS quantum dots drop casted on the surface of a single-mode waveguide. Measurements indicate that a monolayer of quantum dots is expected to produce guided mode attenuation approximately 11 times above the noise level.

© 2016 The Author(s)

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