Transactions in measurement and control -- 1.5

Volume 1: Non-contact Temperature MeasurementChapter Five: Fiber Optic Extensions.

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Chapter 5: Fiber Optic Extensions


Fiber optics are essentially light pipes, and their basic operation may be traced back more than a century when British Physicist John Tyndall demonstrated that light could be carried within a stream of water spouting out and curving downward from a tank. A thin glass rod for optical transmission was the basis of a 1934 patent
awarded to Bell Labs for a "Light Pipe." American Optical demonstrated light transmission through short lengths of flexible glass fibers in the 1950s. However, most modern advances in fiber optics grew out of Corning Glass developments in glass technology and production methods disclosed in the early 1970s.

Like many technical developments since WWII, fiber optics programs were largely government funded for their potential military advantages. Projects primarily supported telecommunications applications and laser fiber ring gyroscopes for aircraft/missile
navigation. Some sensor developments were included in manufacturing technology (Mantech) programs as well as for aircraft, missile and shipboard robust sensor developments. More recently the Dept. of Energy and NIST have also supported various fiber optic developments.

Commercial telecommunications has evolved as the fiber optics technology driving force since the mid-'80s. Increased use of fiber optics well correlates with fiber materials developments and lower component costs. Advances in glass fibers have led to transmission improvements
amounting to over three orders of magnitude since the early Corning Glass efforts. For example, ordinary plate glass has a visible light attenuation coefficient of several thousand dBs per km. Current fiber optic glasses a kilometer thick would transmit as much light as say a 1/4-in. plate glass pane.

Topics covered include:
1.  Fiber Advantages
2.  Fiber Applications
3.  Component Options


Other chapters of Transactions will systematically cover other aspects of temperature, humidity, pressure, strain, flow, level, pH, and conductivity instrumentation as well as other measurement, data acquisition and control topics. Click here to view the other chapters of Volume I, or to download Non-Contact Temperature Measurement in its entirety.

We hope the Transactions in Measurement and Control series will find a permanent home on your reference shelf, and that it proves itself of great value now and in the future.

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