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A Hybrid Phononic Waveguide Using Multilayer Structure At Mid-Infrared, Al-Amri Asma, Michael F. Finch, Claudio Augusto Barreto Saunders Filho, Brian A. Lail
A Hybrid Phononic Waveguide Using Multilayer Structure At Mid-Infrared, Al-Amri Asma, Michael F. Finch, Claudio Augusto Barreto Saunders Filho, Brian A. Lail
Electrical Engineering and Computer Science Faculty Publications
Surface phonon polaritons, SPhPs, result from the coupling or interaction of light with a phonon resonance. There has been extensive research into utilizing surface plasmon polaritons, SPPs, for subwavelength confinement of propagating waveguide modes for photonic integrated circuits. This work investigates the use of a multilayer system or insulatormetal-insulator (IMI) heterostructure as a SPhP-enhanced infrared waveguide where the metal response is due to phonons in a polar dielectric's Reststrahlen band. In addition, an IMI heterostructure supports types of modes: An even mode and odd mode that have their own unique trade-offs. For the odd mode as the metal film thickness …