1. Development of a Fourier-transform waveguide spectrometer for space applications
- Author
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Miroslaw Florjanczyk, Alejandro Ortega-Moñux, Kenneth Sinclair, Alexei Bogdanov, Przemek J. Bock, Pavel Cheben, Siegfried Janz, Carlos Alonso-Ramos, Dan-Xia Xu, A. Scott, Boris Lamontagne, Íñigo Molina-Fernández, and Brian Solheim
- Subjects
spectrometers and spectroscopic instrumentation ,Materials science ,Spectrometer ,Etendue ,business.industry ,planar waveguides ,Physics::Optics ,Fourier transform spectroscopy ,Chip ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,law.invention ,symbols.namesake ,Optics ,Fourier transform ,Planar ,law ,symbols ,Astronomical interferometer ,Electrical and Electronic Engineering ,business ,Waveguide ,Nonlinear Sciences::Pattern Formation and Solitons - Abstract
We describe the development of a waveguide Fourier-transform spectrometer for space-borne high-resolution sensing. A prototype device is designed to monitor the water vapor absorption band near 1,364 nm with a resolution of 0.05 nm. It has no moving parts and is based on a unique concept of arrayed interferometers implemented in silicon-on-insulator planar waveguide chip. The optical input is formed by many independent waveguides, providing a significantly increased light gathering capability (etendue) compared to single-waveguide input configurations. Enhancements of the spectrometer capabilities are achieved by stacking planar waveguide layers and by using surface gratings to couple light into the waveguides.
- Published
- 2012