Micromillimeter wave spectrum analyser using slanted holographic gratings

Max K. Lee; Gordon R. Little

doi:10.1117/12.216812

18 August 1995 Micromillimeter wave spectrum analyser using slanted holographic gratings

Max K. Lee, Gordon R. Little

Proceedings Volume 2622, Optical Engineering Midwest '95; (1995) https://doi.org/10.1117/12.216812
Event: Optical Engineering Midwest '95, 1995, Chicago, IL, United States

Abstract

A concept for performing spectrum analysis of micro-millimeter wave signals using a novel optical grating approach is described. In the approach an optical wave is temporally modulated with the micro-millimeter wave signal, diffracted from a slanted holographic grating, and focused using a simple lens. The slanted grating acts to convert the temporal modulation into spatial form and the lens produces the power spectrum of the signal in its focal plane. Performance levels projected with a 30 cm grating include resolution of 1 GHz and bandwidth of 200 GHz. Use of in-fiber gratings in a raster format will enable resolution of 2.5 MHz.

Citation Download Citation

Max K. Lee and Gordon R. Little "Micromillimeter wave spectrum analyser using slanted holographic gratings", Proc. SPIE 2622, Optical Engineering Midwest '95, (18 August 1995); https://doi.org/10.1117/12.216812

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