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塑料光纤在许多方面胜过玻璃光纤,例如,由于柔性好和重量轻而使操作容易;由于直径和数值孔径大,使彼此之间连接容易;以及价格低廉。然而,与这些优点相反的是其衰减非常高,通常至少达300dB/Km,而多数玻璃光纤为2～10dB/Km。最近,日本电报电话公司在排除塑料纤芯光纤的应用障碍方面,已向前迈进了一大步,根据制造的试样估计,损耗大概能低达30dB/Km。该公司的茨诚电气通信实验室制造了纤芯为聚甲基丙烯酸甲酯(PMMA)的低损耗光纤,PMMA胜过聚苯乙烯,这是因为PMMA具有较好的机械和光学性能。从190℃的聚合物
Plastic optical fibers outperform glass optical fibers in many ways, for example, being easy to handle due to their good flexibility and light weight; being easy to connect to each other due to their large diameter and numerical aperture; and being inexpensive. However, contrary to these advantages, the attenuation is very high, typically at least 300 dB / Km, whereas most glass fibers are 2 to 10 dB / Km. Recently, Nippon Telegraph and Telephone Corporation has taken a big step forward in removing barriers to the application of plastic fiber-core fibers, with estimated losses of as much as 30 dB / Km, based on the manufactured samples. The company’s Petch Electrical Communication Laboratory manufactures low-loss fibers with a PMMA core. PMMA outperforms polystyrene because of its good mechanical and optical properties. Polymer from 190 ° C