1 April 1992 All-optical phase modulation in a single-crystal polydiacetylene waveguide
Author Affiliations +
Proceedings Volume 1626, Nonlinear Optics III; (1992) https://doi.org/10.1117/12.58112
Event: OE/LASE '92, 1992, Los Angeles, CA, United States
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.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mrinal K. Thakur, Mrinal K. Thakur, } "All-optical phase modulation in a single-crystal polydiacetylene waveguide", Proc. SPIE 1626, Nonlinear Optics III, (1 April 1992); doi: 10.1117/12.58112; https://doi.org/10.1117/12.58112

Back to Top