S. Pal, Frank Pavlik, F. G. Anderson, A. Aboketaf, R. Sporer, Michelle Zhang, Shenghua Song
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Low Pπ- value Thermal Phase-Shifters in Si-Photonics Technology
A theoretical and experimental study has been carried out on thermal phase-shifters developed using silicon photonics technology. It has also been shown that Mach Zehnder Interferometer (MZI) structures developed with sealed under-cut thermal phase-shifters show lower value of $P$π (~V7 mW) compared to MZI structures developed using standard thermal phase-shifters (P π~V32 mW) while both have waveguides with similar cross-sectional geometries. MZI structures developed with thermal phase-shifters were designed to guide only TE- polarized light over the O-band (1260-1360nm) and extended C-Band (1500-1600nm).