The Optimization of Multimode Fiber Speckle Sensor for Microvibration

<div>Optical fiber specklegrams formed by fibers with different core diameters: (a) 50 <i>μ</i>m silica fiber, (b) 62.5 <i>μ</i>m silica fiber, (c) 105 <i>μ</i>m silica fiber, (d) 200 <i>μ</i>m silica fiber, (e) 250 <i>μ</i>m polymer optical fiber, (f) 500 <i>μ</i>m polymer optical fiber, and (g) 1000 <i>μ</i>m polymer optical fiber.</div>

International Journal of Optics

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Figure 2

Figure 2: The Optimization of Multimode Fiber Speckle Sensor for Microvibration 