26 January 2009 Advances and challenges in vector modulation technologies
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This paper describes recent progress of high-speed vector optical modulation technologies based on Mach- Zehnder interferometer devices. Multi-level quadrature amplitude modulation signal can be synthesized by using parallel Mach-Zehnder modulators. We can generate complicated multi-level optical signals from binary data streams, where binary modulated signals are vectorially summed in optical circuits. Modulation speed can be higher than 80 Gbaud by using a dual parallel Mach-Zehnder modulator with thin lithium niobate substrate.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tetsuya Kawanishi, Tetsuya Kawanishi, Takahide Sakamoto, Takahide Sakamoto, Akito Chiba, Akito Chiba, } "Advances and challenges in vector modulation technologies", Proc. SPIE 7234, Broadband Access Communication Technologies III, 72340D (26 January 2009); doi: 10.1117/12.816361; https://doi.org/10.1117/12.816361

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