Light confinement and supercontinuum generation switching in photonic-molecule modes of a microstructure fiber |
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Authors: | A B Fedotov I Bugar A N Naumov Jr" target="_blank">D ChorvatJr D A Sidorov-Biryukov D Chorvat A M Zheltikov |
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Institution: | (1) Faculty of Physics, International Laser Center, Lomonosov Moscow State University, Vorob’evy gory, Moscow, 119899, Russia;(2) International Laser Center, Ilkovicova 3, Bratislava, 81219, Slovak Republic |
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Abstract: | The modes guided in a ring system of microstructure-integrated fibers are shown to have much in common with electron wave functions in a two-dimensional polyatomic cyclic molecule. This photonic-molecule analogy provides, in particular, an illustrative and physically clear model of dispersion properties and the mode structure of an electromagnetic field in microstructure fibers of the considered type. A high degree of light confinement in waveguide modes of such a photonic molecule enhances nonlinear-optical processes, permitting an octave spectral broadening to be achieved for low-energy femtosecond laser pulses. |
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