Optical Mode Multiplexer Using LiNbO3 Asymmetric Directional Coupler Enabling Voltage Control for Phase-Matching Condition

Shotaro YASUMORI; Seiya MORIKAWA; Takanori SATO; Tadashi KAWAI; Akira ENOKIHARA; Shinya NAKAJIMA; Kouichi AKAHANE

doi:10.1587/transele.2023ECS6011

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Optical Mode Multiplexer Using LiNbO₃ Asymmetric Directional Coupler Enabling Voltage Control for Phase-Matching Condition

Shotaro YASUMORI, Seiya MORIKAWA, Takanori SATO, Tadashi KAWAI, Akira ENOKIHARA, Shinya NAKAJIMA, Kouichi AKAHANE

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Keywords: optical mode multiplexer, asymmetric directional coupler, LiNbO₃ waveguide, phase-matching condition

JOURNAL FREE ACCESS

2024 Volume E107.C Issue 5 Pages 146-149

DOI https://doi.org/10.1587/transele.2023ECS6011

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Abstract

An optical mode multiplexer was newly designed and fabricated using LiNbO₃ waveguides. The multiplexer consists of an asymmetric directional coupler capable of achieving the phase-matching condition by the voltage adjustment. The mode conversion efficiency between TM₀ and TM₁ modes was quantitatively measured to be 0.86 at maximum.

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