Title :
A Narrowband Metal–Multi-Insulator–Metal Waveguide Plasmonic Bragg Grating
Author :
Chang, Yin-Jung ; Lo, Guo-Yuan
Author_Institution :
Dept. of Opt. & Photonics, Nat. Central Univ., Jhongli, Taiwan
fDate :
5/1/2010 12:00:00 AM
Abstract :
A narrowband waveguide plasmonic Bragg grating based on metal-multi-insulator-metal configuration is proposed and investigated. The general dispersion relation in the vicinity of each forbidden band is derived from which the operation and design principles are developed. Narrowband design examples with the grating length of ??6.8 ??m and the full-width at half-maximum bandwidth of approximately 9 nm in the 1310-nm band are numerically demonstrated. Time-average power flow vortexes are found in each unit cell in the forbidden band and are least-coupled with each other at the Bragg wavelength.
Keywords :
Bragg gratings; MIM structures; energy gap; optical dispersion; optical waveguides; plasmonics; Bragg wavelength; dispersion relation; forbidden band; metal-multiinsulator-metal waveguide; narrowband waveguide plasmonic Bragg grating; power flow vortex; wavelength 1310 nm; Bragg grating; plasmonic waveguide; surface plasmon; vortex;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2043092
