Linearized optical discriminator

Solomon M. Serunjogi, Mahmoud Rasras

    Research output: Contribution to journalArticle

    Abstract

    We present design optimization techniques for linear optical frequency discriminator filters using cascaded lattice Mach-Zehnder interferometers (CLMZI). We propose a simple method for reducing the deviation in amplitude linearity, which relies on a slight reduction of the filter's full bandwidth utilization (BWU). It is shown that a reduction in BWU as low as 5% can result in an order of magnitude improvement in the corresponding amplitude linearity. Additionally, by employing a generalized CLMZI (g-CLMZI) filter architecture with geometrically increasing delays, high linearity can be realized. For example, a three-stage (sixth order) g-CLMZI can provide deviation in linearity of less than 0.5% across the desired bandwidth. Both g-CLMZI and CLMZI architectures are optimized using nonlinear optimization techniques. Design examples of both filter types are given.

    Original languageEnglish (US)
    Article number6994753
    Pages (from-to)386-390
    Number of pages5
    JournalJournal of Lightwave Technology
    Volume33
    Issue number2
    DOIs
    StatePublished - Jan 15 2015

    Fingerprint

    discriminators
    linearity
    Mach-Zehnder interferometers
    filters
    bandwidth
    frequency discriminators
    deviation
    design optimization
    optimization

    Keywords

    • Linear Phase
    • Optical Discriminator
    • Parks McCllellan algorithm
    • Ring Assisted Mach-Zehnder Interferometer
    • Yule-Walker Moving Average

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

    Cite this

    Serunjogi, S. M., & Rasras, M. (2015). Linearized optical discriminator. Journal of Lightwave Technology, 33(2), 386-390. [6994753]. https://doi.org/10.1109/JLT.2014.2381240

    Linearized optical discriminator. / Serunjogi, Solomon M.; Rasras, Mahmoud.

    In: Journal of Lightwave Technology, Vol. 33, No. 2, 6994753, 15.01.2015, p. 386-390.

    Research output: Contribution to journalArticle

    Serunjogi, SM & Rasras, M 2015, 'Linearized optical discriminator', Journal of Lightwave Technology, vol. 33, no. 2, 6994753, pp. 386-390. https://doi.org/10.1109/JLT.2014.2381240
    Serunjogi, Solomon M. ; Rasras, Mahmoud. / Linearized optical discriminator. In: Journal of Lightwave Technology. 2015 ; Vol. 33, No. 2. pp. 386-390.
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