Tunable Narrow-Band Filter Based on Long-Range Surface Plasmon Polariton Waveguide Bragg Grating
نویسندگان
چکیده
A narrow-band Bragg grating filter based on a long-range surface plasmon polariton (LRSPP) waveguide is theoretically demonstrated. The three-dimensional Au stripe that embedded in polymer SU-8 acts as both the and heating electrode. With eigen mode expansion finite element method optimizations, proposed shows reflectivity of 0.578 3 dB bandwidth 1.1 nm. central wavelength can be tuned from 1549.9 nm to 1544.3 by varying temperature 25 °C 75 °C, while maintaining optical return loss at −2.5 dB. This tunable has potential on-chip light signal processing.
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ژورنال
عنوان ژورنال: Photonics
سال: 2022
ISSN: ['2304-6732']
DOI: https://doi.org/10.3390/photonics9050344