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Proceedings Paper

All-optical phase modulation in a single-crystal polydiacetylene waveguide
Author(s): Mrinal K. Thakur
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Paper Abstract

All-optical phase modulation in single crystal waveguides of a polydiacetylene has been investigated by two different interferometric methods: Mach-Zehnder and Sagnac. Large phase changes (> (pi) ) have been observed in a short waveguide (2 mm) for a relatively low optical intensity (-10 MW/cm2), at the wavelength of 1.06 micrometers . These phase changes are due to the off-resonant nonlinearity having an ultrafast (< ps) response time. The results are important in terms of all-optical device applications of these materials. The resonant nonlinearities of these materials were previously studied in detail. The present research is focussed on the off-resonant nonlinearity the origin of which has not been understood as yet.

Paper Details

Date Published: 1 April 1992
PDF: 9 pages
Proc. SPIE 1626, Nonlinear Optics III, (1 April 1992); doi: 10.1117/12.58112
Show Author Affiliations
Mrinal K. Thakur, Auburn Univ. (United States)

Published in SPIE Proceedings Vol. 1626:
Nonlinear Optics III
Robert A. Fisher; John F. Reintjes, Editor(s)

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