A Si Optical Modulator Based on Fano-Like Resonance
- 20 September 2021
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 33 (21), 1209-1212
- https://doi.org/10.1109/lpt.2021.3114384
Abstract
In this letter, we present an experimental demonstration of a Si optical modulator based on Fano-like resonance, which is the first of its kind in the literature. The Fano-like resonance is obtained through weak coupling between two optical resonators in the prototype device and a PN junction is designed for carrier-depletion type electro-refractive modulation. 20 Gb/s data rate on-off keying (OOK) is obtained experimentally on the prototype device. Compared with a ring resonator modulator with a similar optical resonance linewidth, a Fano-like resonance based modulator can potentially have a higher extinction ratio (ER) because the Fano-like resonance has an asymmetric spectrum line shape and the line shape on one side can be sharper than the Lorentz resonance line shape of a ring resonator.Keywords
Funding Information
- Engineering and Physical Sciences Research Council (EPSRC) funded CORNERSTONE 2 Project (EP/T019697/1)
- EPSRC funded Electronic-Photonic Convergence: A Platform Grant (EP/N013247/1)
- Royal Society for his University Research Fellowship
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