Interference of Light Waves in Optical Fiber
Keywords:
Optical interference, Optical fiber, Graded index, OTDR reflectometry, SMS structureAbstract
This study aims to identify light interference patterns in graded index multimode optical fibers by utilizing the optical time-domain reflectometry (OTDR) method. In this test, an optical fiber configuration with a singlemode-multimode-singlemode (SMS) structure is used as a measurement medium. This method allows monitoring of variations in light intensity caused by interference phenomena when light propagates through the fiber. The experimental results show that the interference pattern is strongly influenced by the characteristics of the light wavelength and the physical structure of the fiber, which is represented through changes in the reflection graph on the OTDR device. This finding confirms that the OTDR method can be used as an effective non-invasive technique for direct analysis and monitoring of optical fiber performance.
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