Loic Lalouat and co-workers used a photonic-crystal-based cavity fabricated in a ridge waveguide on a silicon-on-insulator substrate. The volume of the cavity is just 5.5 × 10 –14 cm 3 and the ...

WGM cavities are used in sensing, nonlinear optics, and cavity optomechanics. Photonic crystal cavities are created by introducing defects in periodic dielectric structures known as photonic crystals.

Mechanical crystals, also known as phononic crystals, are materials that can control the propagation of vibrations or sound waves, just like photonic ... a new mechanical crystal with an optically ...