Novel design of compact integrated 8-Channel demultiplexer based on contradirectional Bragg assisted coupler for LAN-WDM is presented. Utilizing subwavelength waveguide for not only guiding the light, but also as reflecting Bragg structure allowing for easier parameter tuning, bigger sized structure resulting in better precision and fabrication error tolerance. Extensive overview of electromagnetic field theory is addressed, to provide background for analytic description and calculation of various parameters. Design parameters are also investigated by simulations in Lumerical Suite software and resulting spectral characteristics give flat top spectral responses with adjacent channel suppression better than 30
dB and insertion loss less than 1 dB.

Novel design of compact integrated 8-Channel demultiplexer based on contradirectional Bragg assisted coupler for LAN-WDM is presented. Utilizing subwavelength waveguide for not only guiding the light, but also as reflecting Bragg structure allowing for easier parameter tuning, bigger sized structure resulting in better precision and fabrication error tolerance. Extensive overview of electromagnetic field theory is addressed, to provide background for analytic description and calculation of various parameters. Design parameters are also investigated by simulations in Lumerical Suite software and resulting spectral characteristics give flat top spectral responses with adjacent channel suppression better than 30
dB and insertion loss less than 1 dB.

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