Chirped FBGs are fiber Bragg gratings with a variable period lengthwise. Fiber Bragg Gratings (FBGs) are one of the most popular technology within fiber-optic sensors, and they allow the measurement of mechanical, thermal, and physical parameters. In recent years, a strong emphasis has been placed on the fabrication and application of chirped FBGs (CFBGs), which are. A fiber Bragg grating (FBG) is a type of distributed Bragg reflector constructed in a short segment of optical fiber that reflects particular wavelengths of light and transmits all others. Chirped fiber grating is an important non-uniform. What is a chirped fiber Bragg grating? What is the purpose of apodization in a fiber Bragg grating? What is the difference between a standard FBG and a long-period grating? How can a fiber Bragg grating be used as a sensor? Summary: This article explains what fiber Bragg gratings (FBGs) are:.