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一、前言自从范·黑尔(Van Heel)发表了梯度折射律纤维以及利用这种纤维做成导象元件以来,光纤维主要用于传送光能和图像。传送图像的典型例子有挠性窥镜,像变换器,圆锥状纤维(像的放大缩小用),析像管(分像用)等等。虽然这些元件很少直接起测量传感器的作用,但是在组成图像测量装置方面起着重要的作用。在传送光能方面,光导己应用于照明系统或接收系统。另一方面,利用运载光能的光纤维通信,实用阶段已为期不远。由于低损失因而加快了实用化的进展,目前可在1公里以上的距离无中继地进行信息传递。这种光通信领域的研究成果,对计量工作也有所促进。光纤维在计量上的应用并非像光通信或图像传输那样引人视目,但也进行了有特点的研究。从单纯利用可挠性传光体这一特性的测量例子,
I. INTRODUCTION Ever since Van Heel published gradient refractive law fibers and used them as lead components, optical fibers are mainly used to transmit light energy and images. Typical examples of transmitting images are flexible mirrors, image transducers, conical fibers (for zooming in and out of images), resolving tubes (for use in images), and the like. Although these components rarely directly function as measuring sensors, they play an important role in the composition of image measuring devices. In the transmission of light energy, the light guide has been applied to the lighting system or receiving system. On the other hand, practical use of fiber-optic communications that carry light energy is not far off. Due to the low loss and thus accelerating the progress of practicality, it is currently possible to transmit information over a distance of 1 km without relay. The research results in the field of optical communications have also contributed to the measurement work. The metrological application of optical fiber is not as compelling as optical communications or image transmission, but has also been characterized. From the measurement example of the characteristic that simply uses the flexible light-transmitting body,