What is the name of the silk-like thread that can be used with led lights and then glow all over?

Optical fiber lamp, the lighting system consists of light source, reflector, color filter and optical fiber. LED fiber-optic lighting can create many colorful effects, such as crystal starry sky constellation, twelve constellations, meteor shower, star wind waterfall, flowing water waterfall, fiber-optic curtain wall, hanging curtain, stereoscopic mirror painting and so on. It is colorful, soft, dreamy, exquisite and elegant, and it is the perfect combination of art and life. Widely used in star hotels, bars, nightclubs, KTV, discos, saunas, etc.