Details
| Original language | English |
|---|---|
| Title of host publication | 2020 International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2020 |
| Publisher | IEEE Computer Society |
| Pages | 81-82 |
| Number of pages | 2 |
| ISBN (electronic) | 9781728160863 |
| Publication status | Published - Sept 2020 |
| Externally published | Yes |
| Event | 2020 International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2020 - Turin, Italy Duration: 14 Sept 2020 → 18 Sept 2020 |
Publication series
| Name | Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD |
|---|---|
| Volume | 2020-September |
| ISSN (Print) | 2158-3234 |
Abstract
Optical phased arrays can steer a beam without mechanical rotation, thus achieving a very rapid scanning rate. The core element of an optical phased array is the pixel (unit cell) and its ability to control the phase and amplitude of the emitted/scattered light. We discuss the role of nanophotonics in achieving pixels that are small enough to avoid grating lobes, which are undesired in LIDAR applications. In particular, we designed a plasmonic pixel embedded in a conductive oxide and separated from it by a thin layer of oxide, thus forming a MOS capacitor. Applying a voltage, we can drive the MOS into accumulation and depletion, and produce a refractive index variation over a thin layer in ITO. This shifts the plasmonic resonance and modifies the phase of the reflection coefficient. We demonstrate the use of our pixel for beam steering in reflectance via 3D-FDTD simulations. We also discuss how pixel limitations, such as a limited phase range and a non-controllable amplitude of the emitted light affect the quality of the LIDAR system.
Keywords
- beam steering, LIDAR, metasurfaces, optical phased array, phase shifter, plasmonics
ASJC Scopus subject areas
- Engineering(all)
- Electrical and Electronic Engineering
- Mathematics(all)
- Modelling and Simulation
Cite this
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2020 International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2020. IEEE Computer Society, 2020. p. 81-82 9217729 (Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD; Vol. 2020-September).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Nanophotonic optical phased arrays
T2 - 2020 International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2020
AU - Lesina, Antonino Cala
AU - Goodwill, Dominic
AU - Bernier, Eric
AU - Ramunno, Lora
AU - Berini, Pierre
N1 - Funding information: We acknowledge computational support from SciNet and Compute Canada, and financial support from NSERC and Huawei Technologies Canada.
PY - 2020/9
Y1 - 2020/9
N2 - Optical phased arrays can steer a beam without mechanical rotation, thus achieving a very rapid scanning rate. The core element of an optical phased array is the pixel (unit cell) and its ability to control the phase and amplitude of the emitted/scattered light. We discuss the role of nanophotonics in achieving pixels that are small enough to avoid grating lobes, which are undesired in LIDAR applications. In particular, we designed a plasmonic pixel embedded in a conductive oxide and separated from it by a thin layer of oxide, thus forming a MOS capacitor. Applying a voltage, we can drive the MOS into accumulation and depletion, and produce a refractive index variation over a thin layer in ITO. This shifts the plasmonic resonance and modifies the phase of the reflection coefficient. We demonstrate the use of our pixel for beam steering in reflectance via 3D-FDTD simulations. We also discuss how pixel limitations, such as a limited phase range and a non-controllable amplitude of the emitted light affect the quality of the LIDAR system.
AB - Optical phased arrays can steer a beam without mechanical rotation, thus achieving a very rapid scanning rate. The core element of an optical phased array is the pixel (unit cell) and its ability to control the phase and amplitude of the emitted/scattered light. We discuss the role of nanophotonics in achieving pixels that are small enough to avoid grating lobes, which are undesired in LIDAR applications. In particular, we designed a plasmonic pixel embedded in a conductive oxide and separated from it by a thin layer of oxide, thus forming a MOS capacitor. Applying a voltage, we can drive the MOS into accumulation and depletion, and produce a refractive index variation over a thin layer in ITO. This shifts the plasmonic resonance and modifies the phase of the reflection coefficient. We demonstrate the use of our pixel for beam steering in reflectance via 3D-FDTD simulations. We also discuss how pixel limitations, such as a limited phase range and a non-controllable amplitude of the emitted light affect the quality of the LIDAR system.
KW - beam steering
KW - LIDAR
KW - metasurfaces
KW - optical phased array
KW - phase shifter
KW - plasmonics
UR - http://www.scopus.com/inward/record.url?scp=85093924032&partnerID=8YFLogxK
U2 - 10.1109/NUSOD49422.2020.9217729
DO - 10.1109/NUSOD49422.2020.9217729
M3 - Conference contribution
AN - SCOPUS:85093924032
T3 - Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD
SP - 81
EP - 82
BT - 2020 International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2020
PB - IEEE Computer Society
Y2 - 14 September 2020 through 18 September 2020
ER -