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光导纤维在医学及通信系统中早已成熟地应用,在其他领域光纤的应用也不断在开发。这里谈谈光纤在油气田建设工程中的应用,仅供参考。一、光纤导光原理光纤材料有两类:一类是玻璃光学纤维,另一类是塑料(丙烯树脂)光学纤维。它用高反射指数的光学玻璃或塑料(设折射率为 n_1),熔化拉成直径约10μm 的圆柱形纤维丝,外表涂上低反射指数(设折射率为 n_2,且 n_1>n_2)的光学玻璃薄膜。一般内窥视光纤由4～5万根纤维丝组成,把这种光学纤维丝一层一层有规律地排列在一起构成纤维束,将其两端粘合固定,中间部位按层排列不必粘合。当光线进入光纤后,由于发生全反射,它稍弯折地达到其
Optical fibers have long been used successfully in medical and communication systems, and optical fiber applications are being developed in other fields. Here to talk about the optical fiber in the construction of oil and gas fields, for reference purposes only. First, the principle of optical fiber guide There are two types of optical fiber materials: one is glass optical fiber, and the other is plastic (acrylic resin) optical fiber. It uses a high reflection index of optical glass or plastic (set refractive index n_1), fused into a diameter of about 10μm cylindrical filaments coated with a low reflection index (refractive index n_2, and n_1> n_2) optics Glass film. General endoscopic fiber consists of 4 to 50,000 filaments, the optical fiber filaments layer by layer regularly arranged together to form a fiber bundle, the two ends of the adhesive fixed, the middle part of the layer by layer do not have to be bonded . When light enters the fiber, it reaches it slightly bent due to total reflection