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Publications [#280465] of David J. Brady

Papers Published

  1. Potuluri, P; Gehm, M; Sullivan, M; Brady, D, Measurement-efficient optical wavemeters., Optics Express, vol. 12 no. 25 (December, 2004), pp. 6219-6229 [19488267], [doi]
    (last updated on 2019/11/19)

    Abstract:
    We describe a method for efficiently determining the wavelength of a monochromatic source and provide an experimental proof-of-concept. The photomeasurement efficiency for a wavemeter can be written as eta(N,q) = (1 + logqN)/m, where N is the number of spectral channels, q is the number of distinguishable output levels per photodetector, and m is the actual number of photomeasurements made. An implementation is developed that achieves a theoretical efficiency of eta(N,q) = 1. The proof-of-concept experiment achieves efficiencies eta = O(1), where the deviation from theory is attributable to well-known optical effects and should be correctable in future versions.

    Keywords:
    Optical systems;Spectrometers;Photodetectors;Monochromators;Semiconducting gallium arsenide;Infrared radiation;Interferometers;Dense wavelength division multiplexing;Communication systems;Fourier transforms;