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Bulgarian Journal of Physics
Print: 1310-0157 Online: 1314-2666
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RECOGNIZED BY THE EUROPEAN PHYSICAL SOCIETY 
Bulg. J. Phys. vol.28 no.3-4 (2001), pp. 128-146
Investigation of Coupling Between a Fiber and a Planar or a Rectangular Waveguide - Effective Index Coupled Mode Approach
K. Panaiotov
Institute of Solid State Physics, Bulgarian Academy of Sciences 72 Tzarigradsko Chaussee Blvd, 1784 Sofia, Bulgaria
go backInstitute of Solid State Physics, Bulgarian Academy of Sciences 72 Tzarigradsko Chaussee Blvd, 1784 Sofia, Bulgaria
Abstract. We present here an effective index-coupled mode model describing the action of a fiber-to-planar (rectangular) waveguide evanescent field coupler, which takes into account the real two-dimensional feature of the waveguide cross-sections. In addition to the increased speed of calculation compared to the earlier model of Marcuse, the effective index method-coupled mode theory model describes the coupling from a fiber to a real rectangular waveguide with a finite width.