Journal article
Compact Z-add-drop wavelength filters for long-range surface plasmon polaritons
We design, fabricate and investigate compact Z-add-drop (ZAD) filters for long-range surface plasmon polaritons (LR-SPPs) at telecom wavelengths. The ZAD filter for LR-SPPs consists of two ridge gratings formed by periodic gold thickness modulation at the intersections of three zigzag-crossed gold stripes embedded in polymer.
We investigate influence of the grating length and crossing angle on the filter characteristics and demonstrate a 10o-ZAD filter based on 80-mm-long gratings that exhibit a 15-dB dip (centered at ~1.55 mm) in transmission of the direct arm along with the corresponding ~13-nm-wide transmission peak in the drop arm.
Language: | English |
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Year: | 2005 |
Pages: | 4237-4243 |
ISSN: | 10944087 |
Types: | Journal article |
DOI: | 10.1364/opex.13.004237 |