Multi-aperture Fourier spectrometers in planar waveguides

We present multiaperture stationary spectrometers in planar optical waveguides. The devices are based on the spatial heterodyning technique, do not require moving parts, and use Fourier transformation for spectra retrieval. The design is based on arrays of waveguide interferometers with linearly increasing optical path delay. The spectrometers have increased optical throughput due to multiple input waveguides. We discuss design, fabrication, and first experimental results for these multiaperture spectrometers implemented in silicon-on-insulator (SOI) ridge waveguides.

[1]  Ja-Yu Lu,et al.  A simple terahertz spectrometer based on a low-reflectivity Fabry-Perot interferometer using Fourier transform spectroscopy. , 2006, Optics express.

[2]  Siegfried Janz,et al.  Planar waveguide spatial heterodyne spectrometer , 2007, Photonics North.

[3]  Ian Powell,et al.  Modeling of the generic spatial heterodyne spectrometer and comparison with conventional spectrometer. , 2006, Applied optics.

[4]  Siegfried Janz,et al.  Multiaperture planar waveguide spectrometer formed by arrayed Mach-Zehnder interferometers. , 2007, Optics express.

[5]  Fred L Roesler,et al.  Robust monolithic ultraviolet interferometer for the SHIMMER instrument on STPSat-1. , 2003, Applied optics.

[6]  Siegfried Janz,et al.  Group-index birefringence and loss measurements in silicon-on-insulator photonic wire waveguides , 2007 .

[7]  R. G. Walker,et al.  Simple and accurate loss measurement technique for semiconductor optical waveguides , 1985 .

[8]  John Ernest Chamberlain.  The principles of interferometric spectroscopy , 1979 .

[9]  Siegfried Janz,et al.  Spatial heterodyne planar waveguide spectrometer: theory and design , 2008, Photonics North.

[10]  Ian Powell,et al.  Wavelength-dispersive device based on a Fourier-transform Michelson-type arrayed waveguide grating. , 2005, Optics letters.

[11]  P. Jacquinot.  The luminosity of spectrometers with prisms, gratings, or Fabry-Perot etalons (Journal of the Optical Society of America 1954) , 1954 .

[12]  Fred L. Roesler,et al.  Spatial heterodyne spectroscopy for the exploration of diffuse interstellar emission lines at far-ultraviolet wavelengths , 1992 .