Analysis of tuning in a photonic crystal multichannel filter containing coupled defects

Tsung Wen Chang, Chien Jang Wu

    Research output: Contribution to journalArticlepeer-review

    11 Citations (Scopus)

    Abstract

    We investigate the tuning properties in a photonic crystal multichannel filter made of coupled defects. The tuning in defect modes is achieved by the temperature change as well as the applied bias voltage. The temperature tuning arises from the thermal expansion and thermal-optical effects in the constituent layers. It is found that the resonant peaks are red-shifted as the temperature increases. In the voltage tuning, the defect modes are blue-shifted as the positive bias is applied, whereas they are red-shifted when the bias voltage is negative. The position of peak wavelength is further shown to linearly decrease with the applied voltage. The analysis of tunable features reveals that such a multichannel filter can be used not only a tunable device but a temperature- or voltage sensor.

    Original languageEnglish
    Pages (from-to)2028-2032
    Number of pages5
    JournalOptik
    Volume124
    Issue number15
    DOIs
    Publication statusPublished - 2013 Aug 1

    Keywords

    • Multichannel filter
    • Photonic crystals
    • Temperature tuning
    • Voltage tuning

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics
    • Electrical and Electronic Engineering

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