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We designed plasmonic Bragg gratings based on a plasmonic trench waveguide and calculated the characteristics of the designed structure. Conventional plasmonic Bragg gratings are typically designed by changing the width of the plasmonic waveguides. In our structure, we examined changes in the depth of a trench plasmonic waveguide. This structure eliminated the abrupt shape change at the wall of the...
We have presented a strain-sensing device in microscale by using surface plasmon polaritons and multimode interference effects. The device is numerically investigated by the finite-difference time-domain method. Optimum depths and length of the structure are designed for sensing a strain. The size of the designed structure is several micrometers and is about a thousandth compared with a fiber Bragg...
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