1.5%-/spl Delta/ athermal arrayed-waveguide grating multi/demultiplexer with very low loss groove design |
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| Authors: | S Kamei K Iemura A Kaneko Y Inoue T Shibata H Takahashi A Sugita |
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| Affiliation: | NTT Photonics Labs., NTT Corp., Kanagawa, Japan; |
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| Abstract: | We describe a compact 1.5%-/spl Delta/ athermal silica-based 100-GHz-spacing 16-channel arrayed-waveguide grating (AWG) multi/demultiplexer with a modified groove design for a very low excess loss. We propose new approaches for modifying the shape of the grooves and the arrayed waveguides and optimize the shape modifications for 1.5%-/spl Delta/ waveguides. By employing this modified groove design, we greatly reduced the groove excess loss from 1.9 to 0.4 dB in the 1.5%-/spl Delta/ athermal AWG. |
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