TY - JOUR
T1 - Demonstration of 2D beam steering using large-scale passive optical phased array enabled by multimode waveguides with reduced phase error
AU - Misugi, Yamato
AU - Okayama, Hideaki
AU - Kita, Tomohiro
N1 - Funding Information:
This study was supported in part by the Commissioned Research of the National Institute of Information and Communications Technology (NICT), Japan, and JSPS KAKENHI Grant No. JP 19H02634.
Publisher Copyright:
© 2022 The Japan Society of Applied Physics.
PY - 2022/10
Y1 - 2022/10
N2 - Optical phased arrays (OPAs) have received considerable attention as solid-state beam scanners. However, conventional OPAs that actively control the phase difference between arrays are characterized by excessive power consumption for high-precision beam emission. In this study, we fabricated an OPA comprising Bragg grating and arrayed waveguide grating (AWG). Multi-mode waveguide is used in AWG to reduce the effect of manufacturing error. This device realizes wide and high-resolution two-dimensional beam steering only by sweeping wavelength. FWHM of the emitted beam is 0.534° × 2.27°, and the steering range is 43.9° × 13.5° with 1/64 of the power consumption of conventional OPA.
AB - Optical phased arrays (OPAs) have received considerable attention as solid-state beam scanners. However, conventional OPAs that actively control the phase difference between arrays are characterized by excessive power consumption for high-precision beam emission. In this study, we fabricated an OPA comprising Bragg grating and arrayed waveguide grating (AWG). Multi-mode waveguide is used in AWG to reduce the effect of manufacturing error. This device realizes wide and high-resolution two-dimensional beam steering only by sweeping wavelength. FWHM of the emitted beam is 0.534° × 2.27°, and the steering range is 43.9° × 13.5° with 1/64 of the power consumption of conventional OPA.
KW - arrayed waveguide grating
KW - optical phased array
KW - silicon photonics
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U2 - 10.35848/1882-0786/ac9033
DO - 10.35848/1882-0786/ac9033
M3 - Article
AN - SCOPUS:85139409649
SN - 1882-0778
VL - 15
JO - Applied Physics Express
JF - Applied Physics Express
IS - 10
M1 - 102002
ER -