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Determination of spatio-spectral properties of individual modes within multimode waveguides using spectrally resolved near-field scanning optical microscopy
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10.1063/1.3647620
/content/aip/journal/apl/99/14/10.1063/1.3647620
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/14/10.1063/1.3647620
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Figures

Image of FIG. 1.
FIG. 1.

(Color online) The real part of the autocorrelation, determined via the Fourier transform of the experimentally collected data, as a function of position across the guide. Features at t = 180 fs are due to the delay between the fundamental and first-order modes. The central feature on this plot is saturated at this power scale to highlight the presence of first-order mode effects.

Image of FIG. 2.
FIG. 2.

(Color online) The real part of the autocorrelations at positions x = ±1 μm across the guide, corresponding to the peaks of the TE01 mode, showing the delay due to the difference in propagation constants of 180 ± 10 fs. The autocorrelation at this delay has opposite amplitudes on either side of the guide center, as expected for the product of the envelopes of fundamental and first order modes.

Image of FIG. 3.
FIG. 3.

(Color online) The calculated local mode amplitude ratio R(x) as a function of position across the waveguide. The solid line is a fit to the measured data using a ratio of mode amplitude coefficients r of 0.097.

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/content/aip/journal/apl/99/14/10.1063/1.3647620
2011-10-05
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Determination of spatio-spectral properties of individual modes within multimode waveguides using spectrally resolved near-field scanning optical microscopy
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/14/10.1063/1.3647620
10.1063/1.3647620
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