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Design of flat-field arrayed waveguide grating with three stigmatic points

  • S. Lu
  • , W. H. Wong
  • , E. Y B Pun
  • , Y. Yan
  • , D. Wang
  • , D. Yi
  • , G. Jin

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

A new-type flat-field arrayed waveguide grating (AWG), with the focal signals of all wavelengths of operation focusing along a straight line, has been designed. The work bases on the aberration theory of AWG, in.which the restraints imposed on the conventional Rowland-type AWG have been released. In the design of flat-field AWG, three stigmatic points restrain three dominant geometry parameters: geometry of star couplers, ports distribution of phased-array, and length increment between adjacent paths. An eight-channel 200-GHz spacing flat-field AWG has been designed and simulated. As stigmatic points introduced, the aberration of this device is much lower than that of the Rowland-type AWG.
Original languageEnglish
Pages (from-to)783-790
JournalOptical and Quantum Electronics
Volume35
Issue number8
DOIs
Publication statusPublished - Jun 2003

Research Keywords

  • Aberration theory
  • Arrayed waveguide grating (AWG)
  • Flat-field
  • Stigmatic point

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