* Question
| What are the two major categories of optical fiber in the sensor? |
* Answer
| The role of optical fibers in sensors is divided into functional (physical) and non-functional (structural).The functional (physical) optical fiber sensor is a sensor that directly or indirectly modulates the light intensity (amplitude), phase, polarization state, wavelength, and the like of the transmitted light in the optical fiber by the measured physical quantity.Generally, an optical material and a sensitive component are placed on the end face of the optical fiber or between the two optical fibers to sense the change of the measured physical quantity, thereby detecting the intensity of the transmitted light or the reflected light.Here the fiber is only used as a transmission loop. |
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