Mishra_Das_Oct6.pdf (798.95 kB)
Download fileA New Approach of Hetero-Cladding for Design of Compact Si Photonic Directional Coupler
In this letter, we propose a new approach of
hetero-cladding for realization of compact CMOS compatible silicon photonic
directional couplers. The proposed hetero-cladding comprises ferroelectric
BaTiO3 (BTO) and SiO2 to control the evanescent mode
within the structure. The results show very small and identical coupling length
for both TE and TM modes with reduced device cross-section, which promises for
a huge reduction in the footprint of both conventional and programmable
photonic integrated circuits. The concept can also be utilized to design
compact, low loss and energy efficient phase shifters, other types of couplers,
sensors etc.