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This first ever Advanced Optical Materials cover design shows a silicon–polymer hybrid slot waveguide ring‐resonator modulator being poled by two pyroelectric crystals. Each of the three images, from top to bottom, indicates one stage of the poling—before, during, and after—with the device configuration in the front and the dipole alignment state represented in the background. For details on how this...
Pyroelectric crystals are used as a conformal and detachable electric field source to efficiently pole electro‐optic (E‐O) polymers in both parallel‐plate (transverse) and in‐plane (quasi‐longitudinal) configurations. Large Pockels coefficients in poled thin films and high tunability of resonance wavelength shift in hybrid polymer silicon slot waveguide ring‐resonator modulators have been achieved...
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