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Schematic of the PhC FP cavity filter.
Optical normalized transmission of the PhC FP cavity. The inset figures show the electric filed distribution (a) at λ = 1554 nm and (b) λ = 1590 nm.
Flow chart of the device fabrication process.
Top view SEM images of the fabricated waveguide and the characterization of the optical mode of (a) the conventional APE waveguide (b) the Hybrid waveguide with taper realized by FIB milling. (c) Horizontal cross section of the optical mode, the solid red line for the hybrid waveguide and the dashed black line for the APE waveguide. (d)Vertical cross section of the optical mode, the solid red line for the hybrid waveguide and the dashed black line for the APE waveguide.
Top view SEM image of the fabricated PhC FP cavity structure.
Experimental setup for optical transmission and tunability performance characterizations. OSA indicates the optical spectrum analyzer, PD the photo-detector, LF the lensed fiber, and DUT the device under test.
(a) Normalized transmission spectra of the PhC cavity structure for 5 different applied voltage values (DC = −10 V, −5 V, 0 V, 5 V, and 10 V) and (b) the wavelength shift as a function of applied voltage.
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