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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 30, Iss. 14 — Jul. 15, 2005
  • pp: 1824–1826

Wavelength-dispersive device based on a Fourier-transform Michelson-type arrayed waveguide grating

Pavel Cheben, Ian Powell, Siegfried Janz, and Dan-Xia Xu  »View Author Affiliations


Optics Letters, Vol. 30, Issue 14, pp. 1824-1826 (2005)
http://dx.doi.org/10.1364/OL.30.001824


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Abstract

We propose a new type of arrayed waveguide grating (AWG) device that operates as a Fourier-transform (FT) spectrometer without the need of scanning elements. The large input aperture size typical of a FT spectrometer eliminates the requirement for a narrow single-mode input waveguide while still achieving high spectral resolution with a markedly increased light-gathering capability (étendue). An example of the device with a resolution of 0.07 nm (∼10 GHz) and designed for a silicon-on-insulator platform is presented. The calculated spectra show no noticeable deterioration for aperture widths as large as 40 µm, yielding more than a 50-fold increase in aperture size compared with conventional AWG or echelle grating based devices at the equivalent resolution.

© 2005 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.2770) Diffraction and gratings : Gratings
(070.4790) Fourier optics and signal processing : Spectrum analysis
(130.0130) Integrated optics : Integrated optics
(130.3120) Integrated optics : Integrated optics devices
(230.7390) Optical devices : Waveguides, planar

Citation
Pavel Cheben, Ian Powell, Siegfried Janz, and Dan-Xia Xu, "Wavelength-dispersive device based on a Fourier-transform Michelson-type arrayed waveguide grating," Opt. Lett. 30, 1824-1826 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-14-1824

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