Optical and Quantum Electronics

, Volume 27, Issue 10, pp 977–985 | Cite as

Radiation field propagation in low-contrast single-mode optical waveguides

  • M. Marciniak
  • B. Jaskorzyńska
Numerical Methods


In short waveguides used in integrated optical circuits, the radiation field is often present in the guiding region of a waveguide as well as the guided modes. We show that this can be investigated efficiently by extracting the radiation part from the total input field and simulating its evolution along the waveguide by use of the beam propagation method. The results are presented for a single-mode waveguide and a waveguide junction excited by a Gaussian beam. For a noncentred excitation, a considerable fraction of the radiation power is still in the guiding region after propagation over several tens of micrometres, and can be coupled to guided modes past the junction.


Radiation Communication Network Radiation Field Gaussian Beam Radiation Power 
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Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • M. Marciniak
    • 1
  • B. Jaskorzyńska
    • 2
  1. 1.Academy of TelecommunicationsPoland
  2. 2.Institute of Optical ResearchStockholmSweden

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