Modeling of reflection-transmission grating based 2DIO wavelength router

Rohana Priyantha Thilakumara, Richard V. Penty, Ian H. White

Research output: Contribution to journalArticlepeer-review

1 Citation (SciVal)


This paper presents an analytic study of a singlemode linear reflection-transmission-grating (RTG)-based twodimensional-integrated-optic (2DIO) N × N wavelength router. To determine its performance, the optical field propagation in the router is simulated using a slab waveguide based on the ABCD matrix theory for low diverging Gaussian beams. In predicting the limits of operation, sources of crosstalk are determined, and their dependence upon fabrication errors such as mask alignment errors is also analyzed. Methods to minimize these are discussed. Finally, the model shows that the device is equally suitable for coarse and dense wavelength division multiplexing applications.

Original languageEnglish
Pages (from-to)3439-3447
Number of pages9
JournalJournal of Lightwave Technology
Issue number9
Publication statusPublished - 1 Sept 2006


  • Coarse wavelength division multiplexing (CWDM)
  • Demultiplexing
  • Dense wavelength division multiplexing (DWDM)
  • Diffraction
  • Grating
  • Integrated optics
  • Optical fiber communication
  • Two-dimensional-integrated-optic (2DIO)

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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