Paper Abstract and Keywords |
Presentation |
2022-01-28 15:45
Mach-Zehnder optical modulator with tunable multimode interference coupler of Ti:LiNbO3 waveguides for modulation of high extinction ratio Anna Hirai, Shotaro Yasumori, Yuichi Matsumoto (Univ of Hyogo.), Takanori Sato (Hokkaido Univ.), Tadashi Kawai, Akira Enokihara (Univ of Hyogo.), Shinya Nakajima, Atsushi Kanno, Naokatsu Yamamoto (NICT) PN2021-48 EMT2021-64 MWP2021-53 Link to ES Tech. Rep. Archives: EMT2021-64 MWP2021-53 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
A Mach-Zehnder optical modulator (MZM) with multimode interference (MMI) couplers using Ti-diffused LiNbO3 was considered. Electrodes were formed on the surface of an MMI waveguide section of the 2×2 MMI coupler, and voltage control of the optical power splitting ratio was experimentally confirmed. The MZM consisting of the MMI optical couplers was fabricated. The extinction ratio could be controlled by applying a voltage to the electrodes, and the maximum extinction ratio of about 50 dB was obtained. Furthermore, we made an optical SSB modulation experiment with microwave signals using an MZM consisting of MMI couplers. The sideband suppression ratio of 39 dB from the output optical spectrum. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Multimode Interference / Optical Modulator / Optical coupler / Titanium diffused LiNbO3 / Tuning, extinction ratio / Optical single-sideband modulation / / |
Reference Info. |
IEICE Tech. Rep., vol. 121, no. 352, MWP2021-53, pp. 85-90, Jan. 2022. |
Paper # |
MWP2021-53 |
Date of Issue |
2022-01-20 (PN, EMT, MWP) |
ISSN |
Online edition: ISSN 2432-6380 |
Copyright and reproduction |
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PN2021-48 EMT2021-64 MWP2021-53 Link to ES Tech. Rep. Archives: EMT2021-64 MWP2021-53 |
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