Mode converter optical isolator based on dual negative refraction photonic crystal
Issue Date
2014Subjects
photonic crystalsmetamaterials
nanostrutured materials
optical computing
refractive index
finite difference time-domain analysis
integrated optoelectronics
optical design techniques
optical isolators
permittivity
photonic band gap
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A new design of an optical isolator based on photonic transitions in the interbands of a honeycomb structure that generates a dual negative refraction in a photonic crystal is presented. The involved photonic transition is associated to the perturbation of the dielectric constant of the medium. The band structure is determined using the plane wave method where the transmission spectra, field profile, and mode amplitudes are obtained by applying the finite difference time domain method. Due to the time-dependent perturbation of the refractive index of the medium that constitutes the dual negative refraction, asymmetric transmission mechanism is achieved for one of the desired modes, demonstrating optical isolation. Using the dual negative refraction effect in photonic crystal structure, the optical isolation is reported for only one of the desired optical modes. It is anticipated that the proposed mode conversion mechanism can be employed for designing ultrahigh-speed optical interconnections. The proposed optical isolator model is expected to have a significant impact on designing ultrahigh-speed integrated optical platforms.Citation
Aroua, W.; AbdelMalek, F.; Haxha, S.; Tesfa, S.; Bouchriha, H. (2014) 'Mode Converter Optical Isolator Based on Dual Negative Refraction Photonic Crystal', IEEE Journal of Quantum Electronics 50 (8), pp.633-638Type
ArticleLanguage
enISSN
0018-91971558-1713
ae974a485f413a2113503eed53cd6c53
10.1109/JQE.2014.2330762
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