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Wavelength multiplexer based on SiO2-Ta2O5 arrayed-waveguide grating

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3 Author(s)
Takahashi, H. ; NTT Transmission Syst. Labs., Kanagawa, Japan ; Suzuki, S. ; Nishi, I.

The characteristics of a wavelength multiplexer based on an arrayed-waveguide grating are carefully investigated by using the grating theory and related experiments. A 28-channel multiplexer is designed and fabricated as SiO2-Ta2O5 waveguides on a 1 cm×2 cm substrate. The designed wavelength channel spacing of 1 nm is obtained. The crosstalk to an adjacent channel is -15 dB. The measured minimum loss is 4.2 dB, which is composed of 3.4 dB excess loss and 0.8 dB grating loss

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Lightwave Technology, Journal of  (Volume:12 ,  Issue: 6 )