Yamaguchi I, Hamano K
Opt Lett. 1995 Aug 1;20(15):1661-3. doi: 10.1364/ol.20.001661.
An interferometer has been developed that uses a bundle of fibers and a current-modulated laser diode. Light from the laser diode is distributed to three fibers whose exit ends are fixed together, and fiber lengths are chosen so that their differences will not be equal. From the phase of separated heterodyne signals produced between the reference and the sensor fibers we can detect the change in optical path length that is caused in the sensor fibers by external perturbations. As an application, temperature sensing at two points has been demonstrated.
一种干涉仪已被开发出来，它使用一束光纤和一个电流调制激光二极管。来自激光二极管的光被分配到三根光纤，这三根光纤的出射端固定在一起，并且选择光纤长度使得它们的长度差不相等。根据参考光纤和传感光纤之间产生的分离外差信号的相位，我们可以检测到由外部扰动在传感光纤中引起的光程长度变化。作为一种应用，已经演示了两点温度传感。
