The WaveShift Series from TeraXion are fiber Bragg grating (FBG) reflectors for Raman fiber lasers in applications such as spectroscopy, laser pumping, biomedical, and telecommunications. Proximion is the leading supplier of advanced Fiber Bragg Gratings (FBGs) based products with a capability to manufacture straight, chirped or tilted FBGs with a customized group delay profile. In recent years, a strong emphasis has been placed on the fabrication and application of chirped FBGs (CFBGs), which are. Fiber Bragg Gratings (FBGs) are periodic variations in the refractive index along the core of an optical fiber, creating a mirror-like effect that reflects specific wavelengths while transmitting others. This modulation of the refractive index allows for precise control over light, influencing both. This paper analyzes the principles of linear chirped fiber gratings and nonlinear chirped fiber gratings, and on the basis of summarizing the current design of chirped fiber gratings, two implementation methods of chirped fiber gratings are proposed. TeraXion's PowerSpectrum products enable manufacturers to reduce $/W by increasing the power output of single oscillators, resulting in fewer high-power oscillators per system. TeraXion has. Using our advanced FBG writing technologies with holographic phase mask and ebeam phase mask, we are able to write many different types of fiber Bragg grating such as the following listed products. We also have a vast fiber gratings inventory on hand.