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Proceedings Paper

Integrated optical devices using bacteriorhodopsin as active nonlinear optical material
Author(s): András Dér; László Fábián; Sándor Valkai; Elmar Wolff; Jeremy Ramsden; Pál Ormos
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Paper Abstract

Coupling of optical data-processing devices with microelectronics, telecocommunication and sensory functions, is among the biggest challenges in molecular electronics. Intensive research is going on to find suitable nonlinear optical materials that could meet the demanding requirements of optoelectronic applications, especially regarding high sensitivity and stability. In addition to inorganic and organic crystals, biological molecules have also been considered for use in integrated optics, among which the bacterial chromoprotein, bacteriorhodopsin (bR) generated the most interest. bR undergoes enormous absorption and concomitant refractive index changes upon initiation of a cyclic series of photoreactions by a burst of actinic light. This effect can be exploited to create highly versatile all-optical logical elements. We demonstrate the potential of this approach by investigating the static and dynamic response of several basic elements of integrated optical devices. Our results show that, due to its relatively high refractive index changes, bR can be used as an active nonlinear optical material to produce a variety of integrated optical switching and modulation effects.

Paper Details

Date Published: 14 September 2006
PDF: 8 pages
Proc. SPIE 6331, Linear and Nonlinear Optics of Organic Materials VI, 633119 (14 September 2006); doi: 10.1117/12.686173
Show Author Affiliations
András Dér, Biological Research Ctr. (Hungary)
László Fábián, Biological Research Ctr. (Hungary)
Sándor Valkai, Biological Research Ctr. (Hungary)
Elmar Wolff, Univ. of Witten-Herdecke (Germany)
Jeremy Ramsden, Cranfield Univ. (United Kingdom)
Pál Ormos, Biological Research Ctr. (Hungary)

Published in SPIE Proceedings Vol. 6331:
Linear and Nonlinear Optics of Organic Materials VI
Robert A. Norwood, Editor(s)

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