PCF (photonic crystal fiber)

Photonic crystal fibers (PCFs) are a type of optical fiber that use a special arrangement of tiny air holes running along their length to control and guide light more efficiently than traditional fibers. These tiny holes form a structured pattern, creating a unique internal environment that allows for customized light transmission, such as transmitting multiple wavelengths simultaneously or maintaining signal strength over longer distances. PCFs are used in high-precision sensing, medical imaging, and advanced telecommunications due to their versatile light-guiding properties and ability to handle higher power levels with minimal loss.