Fourier-transform, integrated-optic spatial heterodyne spectrometer on a silica-based planar waveguide with 1 GHz resolution.

@article{Fontaine2011FouriertransformIS,
  title={Fourier-transform, integrated-optic spatial heterodyne spectrometer on a silica-based planar waveguide with 1 GHz resolution.},
  author={Nicolas K. Fontaine and Katsunari Okamoto and Tiehui Su and S. J. Ben Yoo},
  journal={Optics letters},
  year={2011},
  volume={36 16},
  pages={3124-6}
}
Spatial heterodyne spectrometers (SHS) can achieve high resolution with excellent optical throughput. We demonstrate a planar waveguide SHS incorporating 64 asymmetric Mach-Zehnder interferometers and show measurements that verify 1 GHz resolution across a 64 GHz measurement range. 

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