Bandpass spectra of evanescent couplers with long period gratings

P. K. Lam, A. J. Stevenson, J. D. Love

    Research output: Contribution to journalArticlepeer-review

    16 Citations (Scopus)

    Abstract

    The authors propose a novel optical bandpass filter with strong sidelobe extinction but without the reflected light associated with Bragg grating filters. Long period index gratings written in the cores of an evanescent singlemode coupler suppress cross-coupling at the desired transmission wavelength, while strong optical loss in the secondary core rejects out-of-band wavelengths. Transmission spectra are calculated using coupled mode theory.

    Original languageEnglish
    Pages (from-to)967-969
    Number of pages3
    JournalElectronics Letters
    Volume36
    Issue number11
    DOIs
    Publication statusPublished - 25 May 2000

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