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(a) Schematic of the tethered wire. (b) Scanning electron microscope picture of a suspended wire (spacing , tether length , wire width , tether width , and membrane thickness ).
(a) Periodical reflector-resonator system; (b) transmission map (dB) with 1/(normalized frequency) axis centered on ; (c) resonators now lie at the reflector locations and have large radiation losses; (d) transmission spectrum at the leftmost frequency of transmission map. (e) Dashed lines of (d) are explained in the figure.
Experimental transmission for the tethered wire featuring , , , , and .
Time-wavelength reflection map for (a) a narrow wire exhibiting a sharp 25 dB drop (top inset), and for (b) a wide wire with classical Bragg filtering (3 dB drop, top inset). The slight slope of the front facet is due to the uncompensated dispersion of one arm of the interferometer. The larger delay of the rear facet reflection in (b) reflects the larger group index.
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