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Which outcome occurs when increased vibrations misalign a Sagnac interferometer?

A)Increased thermal noise dominates output
B)Reduced accuracy from fringe blurring
C)Higher power at detector fringes
D)Wavelength drift in measured beams

💡 Explanation

Increased vibrations cause random path length variations, affecting the phase difference sensed with Sagnac interference. This results in *fringe blurring* and inaccurate rotation measurements. Therefore accuracy is reduced rather than increasing detectable power because phase information is degraded.

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