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有读书笔记有附件Broad-band linearization of a Mach-Zehnder electrooptic modulator

vickyz 添加于 2010-3-24 10:44 | 1581 次阅读 | 0 个评论

  •  作 者

    Ackerman EI

  •  摘 要

    Analog optical-link dynamic range in excess of 75 dB in a 1-MHz band has been achieved using specially designed electrooptic modulators that minimize one or more orders of harmonic and intermodulation distortion. To date, however, such “linearized” modulators have only enabled improved link dynamic ranges at frequencies below 1 GHz. Additionally, linearization across more than an octave bandwidth has required precise balancing of the signal voltage levels on multiple electrodes in a custom modulator, which represents a significant implementation challenge. In this paper, a link linearization technique that uses a standard Mach-Zehnder lithium-niobate modulator with only one RF and one dc-bias electrode to achieve broad-band linearization is discussed, resulting in a dynamic range of 74 dB in 1 MHz across greater than an octave bandwidth (800-2500 MHz). Instead of balancing the voltages on two RF electrodes, the modulator in this new link architecture simultaneously modulates optical carriers at two wavelengths, and it is the ratio of these optical carrier powers that is adjusted for optimum distortion canceling. The paper concludes by describing a second analogous link architecture in which it is the ratio of optical power at two modulated polarizations that is adjusted in order to achieve broad-band linearization

  •  详细资料

    • 文献种类: Journal Article
    • 期刊名称: IEEE Transactions on Microwave Theory and Techniques
    • 期刊缩写: IEEE Trans. Microwave Theory Techn.
    • 期卷页: 第47卷 第12期 2271-2279页
    • ISBN: 0018-9480

  • 学科领域 信息系统 » 电子通信

  •  标 签

    Linearization  3rd-order intermodulation supp  Analog Photonics 

  • 相关链接 DOI URL 

  •  vickyz 的文献笔记  订阅

    Use two laser source, 1330nm and 1550 nm and the different PINs to correct the 3rd order distortion. Mainly take advantage of the wavelength independence property of MZM.

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