Phase-balanced differential vector modulation by laser and electroabsorption modulator

Praimezt Mekbungwan, Ukrit Mankong, Keizo Inagaki, Tetsuya Kawanishi

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Citations (Scopus)

    Abstract

    Directly modulated laser can be used as phase modulator due to chirp effect. However, accompanying amplitude modulation also results. By using EA Modulator in combination, light amplitude may be compensated enabling both amplitude and phase modulation of lightwave, which is an alternative method to conventional IQ modulator. Since light phase is proportional to intensity, we propose cumulative phasebalance coding to solve the limitation in the laser operating range for differential M-PSK and M-QAM modulation. The technique applies parallel DC-balance coding with phase-balance symbol mapping. The cumulative phase in high-order differential modulation is always bounded, it is for the first time, to our knowledge.

    Original languageEnglish
    Title of host publicationMWP 2017 - 2017 International Topical Meeting on Microwave Photonics
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages1-4
    Number of pages4
    Volume2017-December
    ISBN (Electronic)9781538607626
    DOIs
    Publication statusPublished - 2017 Dec 5
    Event2017 International Topical Meeting on Microwave Photonics, MWP 2017 - Beijing, China
    Duration: 2017 Oct 232017 Oct 26

    Other

    Other2017 International Topical Meeting on Microwave Photonics, MWP 2017
    CountryChina
    CityBeijing
    Period17/10/2317/10/26

    Keywords

    • Coherent
    • Directly modulated laser
    • Electroabsorption Modulator
    • Phase modulation

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Atomic and Molecular Physics, and Optics

    Fingerprint Dive into the research topics of 'Phase-balanced differential vector modulation by laser and electroabsorption modulator'. Together they form a unique fingerprint.

  • Cite this

    Mekbungwan, P., Mankong, U., Inagaki, K., & Kawanishi, T. (2017). Phase-balanced differential vector modulation by laser and electroabsorption modulator. In MWP 2017 - 2017 International Topical Meeting on Microwave Photonics (Vol. 2017-December, pp. 1-4). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MWP.2017.8168722