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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 15,
  • Issue 2,
  • pp. 021301-
  • (2017)

Numerical evaluation of radiation and optical coupling occurring in optical coupler

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Abstract

We present in this work a new mathematical model to analyze and evaluate optical phenomena occurring in the nonuniform optical waveguide used in integrated optics as an optical coupler. By introducing some modifications to the intrinsic integral, we perfectly assess the radiation field present in the adjacent medium of the waveguide and, thus, follow the evolution of the optical coupling from the taper thin film to the substrate and cladding until there is a total energy transfer. The new model that is introduced can be used to evaluate electromagnetic field distribution in three mediums that constitute any nonuniform optical couplers presenting great or low wedge angles.

© 2017 Chinese Laser Press

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