Projects per year
Abstract
Electro-optical modulators are critical elements in the rapidly developing data communication, optical interconnects, silicon-based photonic systems and terahertz technologies. The limited optoelectronic properties and complicated material growth in traditional semiconductors hinder the rapidly surging demand for modulator performance, energy efficiency, cost, etc. The emergence of two-dimensional materials and one-dimensional carbon nanotubes in recent decades has brought new opportunities with their tremendous selection degree of freedom for exceptional optoelectronic properties. In this article, we present ultra-broadband and electro-optical tunable absorption modulators by employing double-walled carbon nanotube films in a capacitor geometry, spanning the visible to terahertz spectra. The formation of supercapacitors around the ionic gel electrolyte and carbon nanotube film interfaces accounts for the large carrier transition and optical conductivity change, which behaves a thickness dependent electroabsorption dynamics. Our findings not only broaden the understanding of low-dimensional material applications in electro-optics but also pave the way for future developments in high-performance broadband modulators.
Original language | English |
---|---|
Article number | 3300207 |
Number of pages | 8 |
Journal | IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS |
Volume | 30 |
Issue number | 4 |
Early online date | 2024 |
DOIs | |
Publication status | Published - 2024 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Absorption
- Carbon nanotubes
- Double-walled carbon nanotube
- Electro-optic modulators
- Electro-optical modulator
- Electrolytes
- Modulation
- One-dimensional materials
- Optical films
- Optical modulation
Fingerprint
Dive into the research topics of 'Ultra-Broadband and Electro-Optical Tunable Absorption in Double-Walled Carbon Nanotubes'. Together they form a unique fingerprint.-
Bio-Base: Biomaterial-based photonics and optoelectronics for sustainable ICT systems
Sun, Z. (Principal investigator), Ali, F. (Project Member), Shang, N. (Project Member), Sharma, P. (Project Member) & Ning, Z. (Project Member)
01/01/2023 → 31/12/2025
Project: Academy of Finland: Other research funding
-
BRIGHT: Bioottisten vahinkojen kartoitus erittäin laajan spektrialueen LiDAR:illa kestävää metsänkasvua varten
Sun, Z. (Principal investigator), Cui, X. (Project Member), Hassanbouzari, F. (Project Member), Fang, R. (Project Member), Khalid, F. (Project Member), Lin, Y. (Project Member), Pajunpää, T. (Project Member), Shang, N. (Project Member), Tammela, J. (Project Member), Huang, Y. (Project Member), Ning, Z. (Project Member), Zhou, Y. (Project Member) & Tian, R. (Project Member)
EU The Recovery and Resilience Facility (RRF), Suomen Akatemia
01/01/2023 → 31/12/2025
Project: Academy of Finland: Other research funding
-
IPN-Bio: Integrated Photonic-Nano Technologies for Bioapplications
Sun, Z. (Principal investigator)
01/03/2020 → 31/08/2025
Project: EU: MC