| 摘要 |
An apparatus and method of manufacturing optical waveguides that comprises non-optically measuring the average temperature of a moving optical waveguide fiber as it exits a heated draw furnace using a temperature device. The device comprises an enclosed chamber that has a plurality of differential thermopiles secured to the inside surface, and a cooling system that substantially maintains a reference surface temperature of one end of each of the thermopiles. Each of the thermopiles are serially interconnected, whereby, in response to a maximum amount of radiant energy absorbed, the thermopiles generate an output signal. The output signal is substantially proportional to the maximum amount of radiant energy absorbed by the thermopiles, which in turn is substantially proportional to the fourth power of the average temperature of the moving optical waveguide fiber within the chamber.
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