Unconstrained splitting ratios in compact double-MMI couplers

    Research output: Contribution to journalArticleScientificpeer-review

    22 Citations (Scopus)

    Abstract

    A novel guided-wave optical power coupler is presented, based on two 2x2 50/50 multimode interference splitters connected with tapered waveguides that play the role of a phase shifter. By simply changing the length of this phase shifter, these double-MMI couplers can be easily designed to get any desired splitting ratio. Results of simulations are discussed and compared with the characterizations of devices fabricated on micron-scale SOI wafers, to highlight pros and cons of the proposed solution. The fabricated splitters have been found to have average losses about 0.4 ± 0.5 dB and splitting ratios ranging from 56/44 to 96/4.
    Original languageEnglish
    Pages (from-to)9245-9253
    JournalOptics Express
    Volume22
    Issue number8
    DOIs
    Publication statusPublished - 21 Apr 2014
    MoE publication typeA1 Journal article-refereed

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    couplers
    SOI (semiconductors)
    wafers
    waveguides
    interference
    simulation

    Cite this

    @article{34ae718b2cda4795b58757d00604ade2,
    title = "Unconstrained splitting ratios in compact double-MMI couplers",
    abstract = "A novel guided-wave optical power coupler is presented, based on two 2x2 50/50 multimode interference splitters connected with tapered waveguides that play the role of a phase shifter. By simply changing the length of this phase shifter, these double-MMI couplers can be easily designed to get any desired splitting ratio. Results of simulations are discussed and compared with the characterizations of devices fabricated on micron-scale SOI wafers, to highlight pros and cons of the proposed solution. The fabricated splitters have been found to have average losses about 0.4 ± 0.5 dB and splitting ratios ranging from 56/44 to 96/4.",
    author = "Matteo Cherchi and Sami Ylinen and Mikko Harjanne and Markku Kapulainen and Tapani Vehmas and Timo Aalto",
    year = "2014",
    month = "4",
    day = "21",
    doi = "10.1364/OE.22.009245",
    language = "English",
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    journal = "Optics Express",
    issn = "1094-4087",
    publisher = "Optical Society of America OSA",
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    Unconstrained splitting ratios in compact double-MMI couplers. / Cherchi, Matteo; Ylinen, Sami; Harjanne, Mikko; Kapulainen, Markku; Vehmas, Tapani; Aalto, Timo.

    In: Optics Express, Vol. 22, No. 8, 21.04.2014, p. 9245-9253.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Unconstrained splitting ratios in compact double-MMI couplers

    AU - Cherchi, Matteo

    AU - Ylinen, Sami

    AU - Harjanne, Mikko

    AU - Kapulainen, Markku

    AU - Vehmas, Tapani

    AU - Aalto, Timo

    PY - 2014/4/21

    Y1 - 2014/4/21

    N2 - A novel guided-wave optical power coupler is presented, based on two 2x2 50/50 multimode interference splitters connected with tapered waveguides that play the role of a phase shifter. By simply changing the length of this phase shifter, these double-MMI couplers can be easily designed to get any desired splitting ratio. Results of simulations are discussed and compared with the characterizations of devices fabricated on micron-scale SOI wafers, to highlight pros and cons of the proposed solution. The fabricated splitters have been found to have average losses about 0.4 ± 0.5 dB and splitting ratios ranging from 56/44 to 96/4.

    AB - A novel guided-wave optical power coupler is presented, based on two 2x2 50/50 multimode interference splitters connected with tapered waveguides that play the role of a phase shifter. By simply changing the length of this phase shifter, these double-MMI couplers can be easily designed to get any desired splitting ratio. Results of simulations are discussed and compared with the characterizations of devices fabricated on micron-scale SOI wafers, to highlight pros and cons of the proposed solution. The fabricated splitters have been found to have average losses about 0.4 ± 0.5 dB and splitting ratios ranging from 56/44 to 96/4.

    U2 - 10.1364/OE.22.009245

    DO - 10.1364/OE.22.009245

    M3 - Article

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    VL - 22

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    EP - 9253

    JO - Optics Express

    JF - Optics Express

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    ER -