Ming Jie Zheng, Yun San Chan, Kin Wah Yu. Photonic Bloch-dipole-zener Oscillations in Binary Parabolic Optical Waveguide Arrays
Submitted on: Sep 17, 2012, 18:45:05
Natural Sciences / Physics / Optics
Description: We have studied the propagation and Zener tunneling of light in the binary parabolic optical waveguide array (BPOWA), which consists of two evanescently coupled dissimilar optical waveguides. Due to Bragg reflections, BPOWA attains two minibands separated by a minigap at the zone boundary. Various coherent superpositions of optical oscillations and Zener tunneling occur for different parameters on the phase diagram. In particular, Bloch-Zener oscillation and a different type of Bloch-dipole-Zener oscillation are obtained by the field-evolution analysis. The results may have potential applications in optical splitting and waveguiding devices and shed light on the coherent phenomena in optical lattices. *** Journal reference: J. Opt. Soc. Am. B 28, 1339 (2011) ***
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