A method is described to efficiently couple light between single-mode fibre (SMF) and photonic crystals (PhCs) using a novel Fresnel-zone (FZ) MSF lens. In this study, the proposed FZ-MSF lens focuses light in a similar way to a graded-index (GRIN) rod lens, but instead of having a continuous parabolic refractive index variation, the MSF employs longitudinal FZs to focus light from SMF down to PhC dimensions, and vice-versa. Details on the equations describing the trajectory of a light ray in a medium with spatially-varying refractive index is also discussed.
Low refractive-index-contrast Fresnel-microstructure fibre for coupling between SMF and photonic crystals
2003 Digest of LEOS Summer Topical Meeting (Cat. No.03TH8701) ; TuA2.3/43-TuA2.3/44
2003-01-01
223494 byte
Conference paper
Electronic Resource
English
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