Publications by David J. Brady.

Papers Published

  1. Potuluri, P. and Gehm, M.E. and Sullivan, M.E. and Brady, D.J., Measurement-efficient optical wavemeters, Optics Express, vol. 12 no. 25 (2004), pp. 6219 - 6229 [OPEX.12.006219] .
    (last updated on 2007/04/11)

    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 η(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 η(N, q) = 1. The proof-of-concept experiment achieves efficiencies η = O(1), where the deviation from theory is attributable to well-known optical effects and should be correctable in future versions. © 2004 Optical Society of America.

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