Tunable power splitter based on an electro-optic multimode interference device

Abstract

Power splitters based on multimode interference (MMI) devices that offer the possibility of dynamically tuning the power-splitting ratio using electro-optic (EO) polymers are presented. The so-called $1\times 2$ electro-optic MMI (EO-MMI) is demonstrated to provide a tuning range of $6\text{\hspace{0.17em} dB}$ at $\sim 54\text{\hspace{0.17em} V}$ as theoretically predicted. Also a method is discussed to reduce the driving voltage by generating multiple beats, which provide 15 V for a tunable range of $10\text{\hspace{0.17em} dB}$ for $r_{33}=15\text{pm}/\text{V}$ at wavelength $1.55\mu \text{m}$.

© 2007 Optical Society of America

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