Optical signal transmission can be significantly improved by limiting the wavelength of transmitted signals. Fiber Bragg grating (FBG) is a technique widely used in optical communication, sensing, and laser technologies for selectively blocking certain wavelengths of light. In optical fibers, FBG functions as a band-rejection filter that reflects specific light wavelengths, but allows others to pass unimpeded, offering advantages such as improved signal transmission quality, reduced signal loss, and high signal specificity for sensing applications.
Advanced broadband optical signal filtering developed with chirped and tilted fiber Bragg grating
