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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