Abstract

We designed and fabricated an arrayed-waveguide grating (AWG) in silicon oxynitride as a spectrometer for spectral domain optical coherence tomography (SD-OCT). The AWG has a footprint of only 3.0cm×2.5cm, operates at a center wavelength of 1300nm, and has 78nm free spectral range. OCT measurements are performed that demonstrate imaging up to a maximum depth of 1mm with an axial resolution of 19μm, both in agreement with the AWG design parameters. Using the AWG spectrometer combined with a fiber-based SD-OCT system, we demonstrate cross- sectional OCT imaging of a multilayered scattering phantom.

© 2011 Optical Society of America

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