Flat-focal-field integrated spectrometer using a field- flattening lens

B.I. Akça, G. Sengo, Markus Pollnau, A. Driessen, Kerstin Worhoff, R.M. de Ridder

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

    3 Citations (Scopus)
    40 Downloads (Pure)

    Abstract

    We present a new flat-focal-field arrayed-waveguide-grating (AWG) design that utilizes an integrated field-flattening lens placed in the second star coupler. The effective-index difference between slab and lens region is obtained by adding a thin silicon nitride layer to a silicon oxynitride/silicon dioxide waveguide system. As a proof-of-concept, 81-channel AWGs, with and without the lens, are designed, fabricated, and characterized. The measurements show that the lens improves the adjacent crosstalk at the peripheral channels by 2 dB and introduces only 0.4 dB of extra excess loss. A more pronounced crosstalk- improvement for AWGs with higher number of output waveguides is predicted.
    Original languageEnglish
    Title of host publication17th Annual Symposium of the IEEE Photonics Benelux Chapter
    Place of PublicationMons, Belgium
    PublisherFaculty of Engineering, University of Mons
    Pages29-32
    Number of pages4
    ISBN (Print)978-2-8052-0184-4
    Publication statusPublished - 29 Nov 2012
    Event17th Annual Symposium of the IEEE Photonics Benelux Chapter 2012 - Mons, Belgium
    Duration: 29 Nov 201230 Nov 2012
    Conference number: 17
    http://www.telecom.fpms.ac.be/IPS_symposium2012/

    Conference

    Conference17th Annual Symposium of the IEEE Photonics Benelux Chapter 2012
    CountryBelgium
    CityMons
    Period29/11/1230/11/12
    Internet address

    Keywords

    • IOMS-PIT: PHOTONICS INTEGRATION TECHNOLOGY

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  • Cite this

    Akça, B. I., Sengo, G., Pollnau, M., Driessen, A., Worhoff, K., & de Ridder, R. M. (2012). Flat-focal-field integrated spectrometer using a field- flattening lens. In 17th Annual Symposium of the IEEE Photonics Benelux Chapter (pp. 29-32). Mons, Belgium: Faculty of Engineering, University of Mons.