Performance Improvement and Birefringence Investigation of Spectral Domain Optical Coherence Tomography Using a Modified Arrayed Waveguide Grating

Lantian Chang, B.I. Akça, R.M. de Ridder, Kerstin Worhoff, Markus Pollnau

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    An arrayed-waveguide grating (AWG) with its high accuracy and stability is a powerful tool for spectral analysis. We investigate its potential for spectral-domain optical coherence tomography (SD-OCT). A silicon-oxynitride-based AWG spectrometer for the 800 nm wavelength range is designed for on-chip SD-OCT systems. By removing the output waveguides of the AWG, the depth range is significantly enhanced. In addition, the effect of polarization dependency of the AWG on sensitivity roll-off is investigated and for partial polarization, a beat effect is observed in the depth ranging measurements, which leads to signal fading at specific depths.
    Original languageUndefined
    Number of pages4
    Publication statusPublished - 11 Dec 2011
    Event16th Annual Symposium of the IEEE Photonics Benelux Chapter 2011 - Ghent, Belgium
    Duration: 1 Dec 20112 Dec 2011
    Conference number: 16


    Conference16th Annual Symposium of the IEEE Photonics Benelux Chapter 2011
    Internet address


    • IR-79366
    • EWI-21284

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