Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A.
Compact, low insertion loss, high yield arrayed waveguide grating
A planar lightwave circuit includes an arrayed waveguide grating (AWG), with input and output waveguides, partially curved array waveguides with respective length differences, and planar waveguide regions for focusing optical energy between the input/output and array waveguides. Optimal waveguide widths and spacing along the planar waveguide region facets are disclosed, which are largely determinative of AWG size and optical performance. Also disclosed are optimal cross-sectional waveguide dimensions (e.g., width and height); modified index of refraction difference between the waveguide core and cladding regions; and optimal array waveguide lengths, path length differences, and free spectral range. These features, especially when combined with advanced fiber attachment, passivation and packaging techniques, result in high-yield, high-performance AWGs (both gaussian and flattop versions).
JDS Uniphase Corporation
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Zi-Wen David Mark B. Suresh Anantharaman David K. Steven M. Sanjay M. Yingchao Douglas E. Kenzo David J. Robert James Niranjan Hiroaki Jyoti Kiron Thomas Thuan Erik W. James F.
Dong Dougherty Farrelly Ramalingam Vaidyanathan Nakamoto Swain Thekdi Yan Crafts Ishida Chapman Brainard Gopinathan Yamada Bhardwaj Nguyen Egan Farrell