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Proceedings Paper

Phase compensation method for optical phased array based on phase-shifting digital holography
Author(s): Masato Miura; Yuji Miyamoto; Yoshikuni Hirano; Yasushi Motoyama; Kenji Machida; Rieko Ueda; Chiyumi Yamada; Toshiki Yamada; Akira Otomo; Hiroshi Kikuchi
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Paper Abstract

We present a phase compensation method for an optical phased array (OPA) to manipulate a sharply defined optical beam. Undesirable initial phase distribution caused by non-uniformity of fabrication processes and variation in the characteristics of phase shifters is measured by utilizing phase-shifting digital holography, where a light wave from a waveguide in arrayed waveguides is used as a reference wave and light waves from the other waveguides are used as object waves. The initial phases can be compensated by using the measured result without falling into local optimal solutions. A numerical simulation showed that the initial phases were correctly measured and compensated by using the proposed method. Applications of the proposed compensation method to a fabricated OPA with 16-channel electro-optic polymer waveguides results in obtaining a sharply defined optical beam.

Paper Details

Date Published: 26 February 2020
PDF: 6 pages
Proc. SPIE 11284, Smart Photonic and Optoelectronic Integrated Circuits XXII, 1128424 (26 February 2020); doi: 10.1117/12.2544093
Show Author Affiliations
Masato Miura, Japan Broadcasting Corp. - NHK (Japan)
Yuji Miyamoto, Japan Broadcasting Corp. - NHK (Japan)
Yoshikuni Hirano, Japan Broadcasting Corp. - NHK (Japan)
Yasushi Motoyama, Japan Broadcasting Corp. - NHK (Japan)
Kenji Machida, Japan Broadcasting Corp. - NHK (Japan)
Rieko Ueda, National Institute of Information and Communications Technology (Japan)
Chiyumi Yamada, National Institute of Information and Communications Technology (Japan)
Toshiki Yamada, National Institute of Information and Communications Technology (Japan)
Akira Otomo, National Institute of Information and Communications Technology (Japan)
Hiroshi Kikuchi, Japan Broadcasting Corp. - NHK (Japan)


Published in SPIE Proceedings Vol. 11284:
Smart Photonic and Optoelectronic Integrated Circuits XXII
Sailing He; Laurent Vivien, Editor(s)

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