4 papers · 1 filter
A Segmented Heater-Driven, Low-Loss, Reconfigurable Photonic Phase-Change Material-Based Phase Shifter
Ranjeet Dwivedi, Agraj Yadav, Regis Orobtchouk +4
Phase-change material (PCM)-based non-volatile multilevel phase shifters are key components in photonic integrated circuits. Electrically, multiple phase levels can be encoded by c…
An Ultra-low-loss Compact Phase-Change Material-based Hybrid-mode Interferometer for Photonic Memories
Ranjeet Dwivedi, Fabio Pavanello, Regis Orobtchouk
We propose a novel hybrid mode interferometer (HMI) leveraging the interference of hybridized TE-TM modes in a silicon-on-insulator (SOI) waveguide integrated with a GeSe phase cha…
Broadband forward scattering of light by plasmonic balls: role of multipolar interferences
Ranjeet Dwivedi, Maeva Lafitte, Lionel Buisson +3
Efficient and broadband forward-scattering is a property of prime importance for meta-atoms if they are to be used in self-assembled metasurfaces. Strong contenders include colloid…
Ultra-high Sensitive Surface Plasmon Resonance Based Sensor with Dual Resonance
Indrajeet Kumar, Ranjeet Dwivedi, Saurabh Mani Tripathi
We show that for the optimized angle of incidence, the SPR based optical sensors exhibit dual resonance in the near-infrared region around which the sensor becomes exceptionally hi…