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本文叙述用热温升技术测量导光纤维传输损耗的二种方法。在短段(～10厘米)纤维上能迅速而方便地测出损耗。用～100毫瓦的传输光功率可以测量出低至～10~(-7)/厘米(0.043分贝/公里)的损耗值。
This article describes two methods of measuring the transmission loss of a light-guiding fiber with a thermal ramp technique. Loss can be quickly and easily measured on short segments (~ 10 cm) of fiber. Transmission losses as low as ~10 ~ (-7) / cm (0.043 dB / km) can be measured with ~100 mW transmitted optical power.