TY - GEN
T1 - Sub-wavelength pitch optical antenna array with low crosstalk for optical phased array
AU - Zhou, Guangzhu
AU - Chan, Chi Hou
AU - Qu, Shi-Wei
AU - Chen, Baojie
PY - 2022/12
Y1 - 2022/12
N2 - Electromagnetic couplings are ubiquitous in the microwave and optical systems. Notably, high-density integration of photonic chips will suffer from strong crosstalk between different channels due to the larger electrical size of dielectric waveguides, resulting in the degradation of device performance. For the application of optical phased arrays (OPAs), strong crosstalk between adjacent channels will prevent the independent phase control over each antenna element. Here, we propose a sub-wavelength pitch optical antenna array with low crosstalk for wide-angle beam steering of OPA. In this design, two thin strips along the transmission waveguide are introduced to increase the cladding anisotropy, suppressing evanescent wave couplings. Besides, period nano-blocks arranged along both sides of silicon strip waveguide are utilized to suppress the crosstalk further and radiate electromagnetic waves into free spaces simultaneously. © 2022 IEEE.
AB - Electromagnetic couplings are ubiquitous in the microwave and optical systems. Notably, high-density integration of photonic chips will suffer from strong crosstalk between different channels due to the larger electrical size of dielectric waveguides, resulting in the degradation of device performance. For the application of optical phased arrays (OPAs), strong crosstalk between adjacent channels will prevent the independent phase control over each antenna element. Here, we propose a sub-wavelength pitch optical antenna array with low crosstalk for wide-angle beam steering of OPA. In this design, two thin strips along the transmission waveguide are introduced to increase the cladding anisotropy, suppressing evanescent wave couplings. Besides, period nano-blocks arranged along both sides of silicon strip waveguide are utilized to suppress the crosstalk further and radiate electromagnetic waves into free spaces simultaneously. © 2022 IEEE.
KW - antenna
KW - crosstalk reduction
KW - optical integrations
KW - optical phased array (b) (OPA)
UR - http://www.scopus.com/inward/record.url?scp=85151546106&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85151546106&origin=recordpage
U2 - 10.1109/ACES-China56081.2022.10065319
DO - 10.1109/ACES-China56081.2022.10065319
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 978-1-6654-5237-3
T3 - International Applied Computational Electromagnetics Society Symposium, ACES-China
BT - 2022 International Applied Computational Electromagnetics Society Symposium (ACES-China)
PB - IEEE
T2 - 2022 International Applied Computational Electromagnetics Society Symposium (ACES-China 2022)
Y2 - 9 December 2022 through 12 December 2022
ER -