Supercontinuum generation in photonic-molecule modes of microstructure cobweb fibers and photonic-crystal fibers with femtosecond pulses of tunable 1.1-1.5-mu m radiation

摘要

The modes guided in a ring system of cobweb-microstructure-integrated fibers are shown to have much in common with electron wave functions in a two-dimensional polyatomic cyclic molecule. 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. Supercontinuum-generating abilities of photonic-molecule modes of a cobweb microstructure and guided modes of a photonic-crystal fiber are compared. [References: 32]