All-Optical Modulation in Chains of Silicon Nanoantennas
| Autor: | Shiqiang Li, Dmitry Morits, Shiyang Zhu, Reuben M. Bakker, Ye Feng Yu, Lu Ding, Arseniy I. Kuznetsov, Ramón Paniagua-Domínguez, Damien Eschimese |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Silicon Nanophotonics chemistry.chemical_element 02 engineering and technology Dielectric 01 natural sciences Light scattering dielectric nanoantenna 010309 optics Resonator 0103 physical sciences Electrical and Electronic Engineering Silicon photonics optical modulation silicon photonics business.industry 021001 nanoscience & nanotechnology Chip Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials chemistry Modulation Optoelectronics resonator 0210 nano-technology business Biotechnology |
| Zdroj: | Ding, L, Morits, D, Bakker, R, Li, S, Eschimese, D, Zhu, S, Yu, Y F, Paniagua-Dominguez, R & Kuznetsov, A I 2020, ' All-Optical Modulation in Chains of Silicon Nanoantennas ', ACS Photonics, vol. 7, no. 4, pp. 1001-1008 . https://doi.org/10.1021/acsphotonics.9b01678 |
| ISSN: | 2330-4022 |
| Popis: | Dielectric nanoantennas represent a new branch of nanophotonics that allows efficient control of light scattering at nanoscale. Coupled nanoantennas can guide light on a chip over large distances without radiation losses, enabling a new nanoantenna-based silicon photonics platform with enchanced functionalities for light-on-chip integration. Here, an all-optical on-chip modulator based on a one-dimensional chain of silicon nanoantennas is proposed and experimentally demonstrated in the 1.55 μm telecommunication wavelength range. A resonator, with a quality factor up to 104, is designed on the basis of a chain of coupled silicon nanoantennas, each supporting the electric dipole Mie resonance. Wafer-level fabrication of the nanoantennas is realized using CMOS compatible photolithography. High-speed modulation of the cavity mode is experimentally demonstrated via optical injection of free electrons and holes using a pulsed laser. The modulator is shown to have a response time of 50 ps and modulation depth beyond 25 dB, with 10 dB switching power being as low as âˆ50 fJ. Low power and high-speed switching of the proposed device combined with the large-scale fabrication capabilities pave the way to applications of this dielectric nanoantenna-based approach to industrial on-chip photonics. |
| Databáze: | OpenAIRE |
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