Three-dimensional hybrid modeling based on a beam propagation method and a diffraction formula for an AWG demultiplexer
2007 (English)In: Optics Communications, ISSN 0030-4018, E-ISSN 1873-0310, Vol. 270, no 2, 195-202 p.Article in journal (Refereed) Published
An efficient and accurate three-dimensional (3D) hybrid modeling, which combines a 3D beam propagation method (BPM) and the two-dimensional (2D) Kirchhoff-Huygens diffraction formula, is developed to simulate the field propagation in an arrayed waveguide grating (AWG) dernultiplexer. The 2D Kirchhoff-Huygens diffraction formula is used for the simulation of the light propagation in the free propagation regions (FPRs). A 3D BPM in a polar coordinate system is used to simulate the light propagation in the transition region between the input FPR and the arrayed waveguides so that the coupling coefficients for the arrayed waveguides are calculated conveniently and accurately. For the simulation in the transition region between the arrayed waveguides and the output FPR, only the central arrayed waveguide and several adjacent ones are needed in the computational window of a standard BPM and thus the computation efficiency is improved. Finally, a flat-top AWG is designed and fabricated to verify the reliability of the present simulation method. The calculated and measured spectral responses are in a good agreement.
Place, publisher, year, edition, pages
2007. Vol. 270, no 2, 195-202 p.
arrayed waveguide grating, hybrid method, Kirchhoff-Huygens diffraction, beam propagation method, polar coordinate, flat-top, optimal-design, star couplers, guide
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-16377DOI: 10.1016/j.optcom.2006.08.051ISI: 000244157700014ScopusID: 2-s2.0-33845657440OAI: oai:DiVA.org:kth-16377DiVA: diva2:334419
QC 20100525. Tidigare titel: Three-dimensional hybrid method for efficient and accurate simulation of AWG demultiplexers2010-08-052010-08-052013-11-19Bibliographically approved