Tapered Long-Range Surface Plasmon Polariton Waveguides with a Gap.
J Nanosci Nanotechnol
; 19(10): 6192-6196, 2019 Oct 01.
Article
en En
| MEDLINE
| ID: mdl-31026935
ABSTRACT
We propose tapered long-range surface plasmon polariton (LR-SPP) waveguides with a gap (tapered G-SPPWs) for improved tunneling efficiency in G-SPPWs. The optical characteristics of the fabricated tapered G-SPPWs were experimentally measured and compared with simulation results. The proposed tapered structure can improve tunneling efficiency by reducing insertion loss of the tapered G-SPPWs. The insertion losses of the straight G-SPPW with an 8-µm gap length and a 2-µm SPPW width and the tapered G-SPPW with an 8-µm gap length, a 2-µm SPPW width, a 6-µm taper width, and a 3-µm taper length were measured to be ~1.03 and ~0.74 dB, respectively. The tapered G-SPPW has potential as an efficient plasmonic modulation device element, offering control of the guided SPP through interaction with an applied force in the gap.
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01-internacional
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MEDLINE
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En
Revista:
J Nanosci Nanotechnol
Año:
2019
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Article