Wavelength detector using a pair of metal-semiconductor-metal photodetectors with subwavelength finger spacings

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Abstract

A wavelength detector that employs two metal-semiconductor-metal photodetectors with different subwavelength finger spacings is proposed and demonstrated. The resonance effect of the subwavelength-spaced fingers results in a photocurrent ratio that has one-to-one correspondence with the wavelengths of the monochromatic incident light. The device has a spectral range of 450 - 800nm with a resolution of 5 nm. This device makes automatic wavelength calibration in optical instrumentation feasible.

Original languageEnglish (US)
Pages (from-to)1510-1511
Number of pages2
JournalElectronics Letters
Volume32
Issue number16
DOIs
StatePublished - Aug 1 1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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