Summary
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Mach-Zehnder Optical Modulator Integrated with Tunable Multimode Interference Coupler of Ti:LiNbO3 Waveguides for Controlling Modulation Extinction Ratio Anna HIRAI Yuichi MATSUMOTO Takanori SATO Tadashi KAWAI Akira ENOKIHARA Shinya NAKAJIMA Atsushi KANNO Naokatsu YAMAMOTO Publication IEICE TRANSACTIONS on Electronics Vol.E105-C No.8 pp.385-388 Publication Date: 2022/08/01 Publicized: 2022/02/16 Online ISSN: 1745-1353 DOI: 10.1587/transele.2021ECS6018 Type of Manuscript: BRIEF PAPER Category: Lasers, Quantum Electronics Keyword: multimode interference (MMI), optical modulator, optical coupler, titanium diffused LiNbO3, tuning, extinction ratio, optical single-sideband (SSB) modulation, Full Text: PDF(1.6MB)>>
Summary: A Mach-Zehnder optical modulator with the tunable multimode interference coupler was fabricated using Ti-diffused LiNbO3. The modulation extinction ratio could be voltage controlled to maximize up to 50 dB by tuning the coupler. Optical single-sideband modulation was also achieved with a sideband suppression ratio of more than 30 dB. | |||||
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