We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Integrated ultra-high-performance graphene optical modulator.
- Authors
Heidari, Elham; Dalir, Hamed; Koushyar, Farzad Mokhtari; Nouri, Behrouz Movahhed; Patil, Chandraman; Miscuglio, Mario; Akinwande, Deji; Sorger, Volker J.
- Abstract
With the increasing need for large volumes of data processing, transport, and storage, optimizing the trade-off between high-speed and energy consumption in today's optoelectronic devices is getting increasingly difficult. Heterogeneous material integration into silicon- and nitride-based photonics has showed high-speed promise, albeit at the expense of millimeter-to centimeter-scale footprints. The hunt for an electro-optic modulator that combines high speed, energy efficiency, and compactness to support high component density on-chip continues. Using a double-layer graphene optical modulator integrated on a Silicon photonics platform, we are able to achieve 60 GHz speed (3 dB roll-off), micrometer compactness, and efficiency of 2.25 fJ/bit in this paper.The electro-optic response is boosted further by a vertical distributed-Bragg-reflector cavity, which reduces the driving voltage by about 40 times while maintaining a sufficient modulation depth (5.2 dB/V). Modulators that are small, efficient, and quick allow high photonic chip density and performance, which is critical for signal processing, sensor platforms, and analog- and neuromorphic photonic processors.
- Subjects
OPTICAL modulators; GRAPHENE; INHOMOGENEOUS materials; SIGNAL processing; PHOTONICS; ENERGY consumption; OPTOELECTRONIC devices
- Publication
Nanophotonics (21928606), 2022, Vol 11, Issue 17, p4011
- ISSN
2192-8606
- Publication type
Article
- DOI
10.1515/nanoph-2021-0797