Photonics Research, 2018, 6 (5): 050000B1, Published Online: Apr. 11, 2019
All-optical switching in silicon photonic waveguides with an epsilon-near-zero resonant cavity [Invited] Download: 813次
Abstract
Strong nonlinearity of plasmonic metamaterials can be designed near their effective plasma frequency in the epsilon-near-zero (ENZ) regime. We explore the realization of an all-optical modulator based on the Au nonlinearity using an ENZ cavity formed by a few Au nanorods inside a Si photonic waveguide. The resulting modulator has robust performance with a modulation depth of about 30 dB/μm and loss less than 0.8 dB for switching energies below 600 fJ. The modulator provides a double advantage of high mode transmission and strong nonlinearity enhancement in the few-nanorod-based design.
Andres D. Neira, Gregory A. Wurtz, Anatoly V. Zayats. All-optical switching in silicon photonic waveguides with an epsilon-near-zero resonant cavity [Invited][J]. Photonics Research, 2018, 6(5): 050000B1.