Device for manufacturing spiral core long-period fiber grating

The invention discloses a device for manufacturing a spiral core long-period fiber grating. The device includes two electric translation tables, an optical fiber clamp, an electric rotation displacement table, a CO2 laser, a sapphire transistor, a transistor fixing device and an optical fiber, wherein the electric rotation displacement table and the second electric translation table are fixed at two ends of the first electric translation table, and the sapphire transistor is fixed on the transistor fixing device; and the optical fiber horizontally penetrates through the sapphire transistor, and both ends of the optical fiber are clamped by the optical fiber clamp. The CO2 laser generates a CO2 laser beam to continuously irradiate the sapphire transistor, thereby indirectly heating a local part of the optical fiber to a molten state, the first electric translation table enables the optical fiber to continuously axially penetrate through the sapphire transistor, the electric rotation displacement table rotates