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Proceedings Paper

Multiple quantum-well spatial light modulators for optical signal processing
Author(s): Bertrand Noharet; Qin Wang; Stephane Junique; Daniel Agren; Susanne Almqvist
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Paper Abstract

We report on the development of different surface-normal multiple quantum well (MQW) modulator devices. Owing to their unique speed advantage, arrays of surface-normal MQW modulators are very well suited for fast and parallel signal processing, and can be developed for both digital or analogue signals. We present the design and fabrication process for single surface-normal MQW modulators, as well as for high fill factor (80-90%) 1-D arrays of such modulators. Design issues and trade-offs in terms of modulator size, speed and contrast ratios are described. Contrast ratios in excess of 100:1 have been demonstrated. 3-dB frequency modulation bandwidths in excess of 1GHz have been obtained for single modulator devices of 125μm in diameter. Performances of 1-D arrays of 64 and 128 modulators (pixel size: 2mmx80μm and 2mmx40μm, respectively) are also presented, with response time for programmable filtering in the order of 10 ns.

Paper Details

Date Published: 30 November 2004
PDF: 10 pages
Proc. SPIE 5618, Integrated Optical Devices, Nanostructures, and Displays, (30 November 2004); doi: 10.1117/12.588324
Show Author Affiliations
Bertrand Noharet, Acreo AB (Sweden)
Qin Wang, Acreo AB (Sweden)
Stephane Junique, Acreo AB (Sweden)
Daniel Agren, Acreo AB (Sweden)
Susanne Almqvist, Acreo AB (Sweden)

Published in SPIE Proceedings Vol. 5618:
Integrated Optical Devices, Nanostructures, and Displays
Keith L. Lewis, Editor(s)

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