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

Shuo-Yen Tseng, Canek Fuentes-Hernandez, Daniel Owens, Bernard Kippelen
2007 Optics Express  
Variable power splitting ratio 2×2 MMI couplers using multimode waveguide holograms are analyzed. Theoretical analysis shows that variable splitting ratios can be obtained with surface relief holograms on MMI couplers with fixed dimensions. Devices with paired-imaging lengths are designed on a silicon-on-insulator (SOI) platform. Beam propagation simulations are used to verify a matrix theory analysis and to investigate proposed device performance. Fabrication tolerance of the proposed device
more » ... e proposed device is also analyzed.
doi:10.1364/oe.15.009015 pmid:19547241 fatcat:ntuuzafez5h4vo6tk43rywxx54