Source: YouTube Optical Path Length Understanding Optical Path Length in Optics What is Optical Path Length? Optical Path Length (OPL) is a fundamental concept in optics, defined as the product of the physical path length that light travels through a medium and the refractive index of that medium. It represents the change in optical phase […]
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Source: Wikimedia Commons Common-Path Interferometers Understanding Common-Path Interferometers Sagnac Interferometer A Sagnac interferometer is designed with the interfering beams traveling along a ring in opposite directions. This setup is commonly used for gyroscopes due to the path length difference generated by rotations around an axis perpendicular to the loop plane. Point Diffraction Interferometers Point diffraction
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