Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/11635
Title: Optimized amplitude distributions for grating and side lobe suppression in optical phased array antennas
Authors: Sakin, A.O.
Akcay, B.
Songur, A.C.
Unlu, M.
Keywords: apodization
Grating lobes
optical phased array antennas
silicon-on-insulator
true-time-delay line
Antenna phased arrays
Optical communication
Optical radar
Silicon on insulator technology
Time delay
Waveguides
Amplitude distributions
Apodizations
Grating lobe suppression
Grating lobes
Optical phased arrays
Optical phased-array antennas
Side lobes
Silicon on insulator
Steering angles
True time delay line
Timing circuits
Publisher: SPIE
Abstract: Integrated optical phased arrays (OPAs) are important for various applications such as LIDAR, microscopy, wireless communication, and holography. Traditional one-dimensional N-element OPAs with individual phase shifters for varied steering angles often have emitter spacings that exceed half a wavelength, leading to grating lobes. Moreover, using true-time-delay lines with varied numbers of periods for different delays may cause amplitude inconsistencies and further side lobe elevation. The proposed partially apodised (PA) one-dimensional grating waveguide design controls amplitude while conserving the time delay for targeted steering angles, using distributions as Uniform to minimize grating and side lobes. We fabricated a four-element array with insertion losses of -3 dB for the PA version across the 1530-1580 nm wavelength band. © 2024 SPIE.
Description: The Society of Photo-Optical Instrumentation Engineers (SPIE)
Nanophotonics X 2024 -- 7 April 2024 through 12 April 2024 -- 200395
URI: https://doi.org/10.1117/12.3022220
https://hdl.handle.net/20.500.11851/11635
ISBN: 9781510673007
ISSN: 0277-786X
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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