Grating degeneration technique and sandwich structures forholographic N×N passive star couplers |
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| Authors: | Yun G Kavehrad M |
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| Affiliation: | Dept. of Electr. Eng., Ottawa Univ., Ont.; |
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| Abstract: | Design for an efficient N×N passive integrated optical star coupler are proposed. The concepts of grating degeneration and sandwich structures are presented. The techniques and their combinations can significantly reduce the number of gratings required by the coupler and thus make it possible to build holographic N×N star couplers with recording materials of a moderate dynamic range |
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