Photosensitive fiber preform : germanium/rare earth element doped quartz substrate, permanently refractive index modulated by ultraviolet irradiation, used for engraving fiber Bragg gratings (FBGs) .
Special fiber preform: By doping materials (fluorine/boron/photonic crystals) and structural design, it achieves special functions such as energy transmission, radiation resistance, and microstructure.
Four disruptive advantages
Photon customization degree of freedom
The photosensitive preform supports a sensitivity of >40dB and can engrave complex FBG arrays (wavelength accuracy ± 0.05nm), with customized filters/sensors.
Special prefabricated rods achieve a micro porous structure of 0.1-1000 μ m, constructing photonic crystal fibers (PCF) or hollow core fibers .
Extreme environmental adaptability
Radiation resistant prefabricated rod (cerium doped quartz) has a loss of less than 1dB/km under 10 ⁶ Gy gamma rays (ordinary optical fiber failure).
Keyword：
1.Special fiber preform