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Variable splitting ratio 2 × 2 MMI couplers using multimode waveguide holograms

Tseng, Shuo-Yen; Fuentes-Hernandez, Canek; Owens, Daniel T.; Kippelen, Bernard (Georgia Institute of Technology, 2007-07)

Variable power splitting ratio 2×2 MMI couplers using multi-mode waveguide holograms are analyzed. Theoretical analysis shows that variable splitting ratios can be obtained with surface relief holograms on MMI couplers ...