$C$ -Band Optical 90$^{circ}$ -Hybrids Based on Silicon-on-Insulator 4 $times$ 4 Waveguide Couplers |
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Authors: | Zimmermann L. Voigt K. Winzer G. Petermann K. Weinert C.M. |
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Affiliation: | Fachgebiet Hochfrequenztech. (HFT4), Tech. Univ. Berlin, Berlin; |
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Abstract: | We demonstrate 4times4 multimode interference couplers in a silicon-on-insulator rib waveguide technology that enable compact integrated fully passive optical 90deg-hybrid devices with operation across the C-band. |
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