Metamaterials and Photonic Crystals
Filters are devices or structures that selectively transmit or block certain frequencies of light or electromagnetic waves while allowing others to pass through. They play a crucial role in manipulating the properties of light, especially in the context of defect modes within photonic crystals, where they can help isolate specific wavelengths of light or enhance desired optical effects.
congrats on reading the definition of Filters. now let's actually learn it.