Non thermal (heat insensitive) encapsulated Bragg fiber grating FBG

Bragg fiber Bragg grating is highly sensitive to temperature changes. Their thermal sensitivity is approximately 6.7 ppm/⁰ K (+0.11 pm/⁰ K at a wavelength of 1550 nm). Non thermal encapsulated FBG aims to passively compensate for the thermal sensitivity of FBG through the expansion fit of shell components and wavelength shift of FBG under temperature influence. It enables customers to achieve all the advantages of fiber Bragg gratings while maintaining high wavelength stability over a wide temperature range.