Measurement of nonlinear refractive index and transmission in polydiacetylene waveguides at 1.319 μm

K. B. Rochford; R. Zanoni; G. I. Stegeman; W. Krug; W. Krug; E. Miao; E. Miao; M. W. Beranek; M. W. Beranek

Conference on Lasers and Electro-Optics
OSA Technical Digest (Optica Publishing Group, 1991),
paper CFA2

Measurement of nonlinear refractive index and transmission in polydiacetylene waveguides at 1.319 μm

K. B. Rochford, R. Zanoni, G. I. Stegeman, W. Krug, E. Miao, and M. W. Beranek

Conference on Lasers and Electro-Optics 1991

Baltimore, Maryland United States
12–17 May 1991
ISBN: 1-55752-189-1

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Organic Electro- and Nonlinear Optical Materials (CFA)

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K. B. Rochford, R. Zanoni, G. I. Stegeman, W. Krug, E. Miao, and M. W. Beranek, "Measurement of nonlinear refractive index and transmission in polydiacetylene waveguides at 1.319 μm," in Conference on Lasers and Electro-Optics, J. Bufton, A. Glass, T. Hsu, and W. Krupke, eds., Vol. 10 of OSA Technical Digest (Optica Publishing Group, 1991), paper CFA2.

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Abstract

Nonlinear-optical measurements in channel waveguides of polydiacetylene (4-BCMU) at 1.319 μm are reported. Single-mode strip-loaded channel waveguides of spin-coated poly(4- BCMU) were linearly characterized and modeled to find accurate TE₀ field profiles. A pulse- modulated interferometry method was created to measure the phase-shift difference induced in a nonlinear medium by a mode-locked pulse train with two different intensity levels. For TE polarization, the intensity-dependent refractive index was found to have an electronic contribution, n₂ = (4.8 ± 2.7) × 10⁻⁸ cm²/MW.

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