Visualization 1.avi

Movie demonstrating the force and compression sensing capability of the fiber-optic sensor. As the sensor is compressed by a commercial MEMS force sensor, the reflectance spectra collected at the proximal end of the fiber exhibit distinct changes in both the wavelengths and intensities of their numerous spectral peaks. These changes underlie the force sensing capability. In the images of the force sensor displayed in the left panel, the red arrow indicates the position of the front face of the optical fiber at the point of zero compression. This aids in the visualization of the compression, as the fiber tip can be seen to move beyond this point as the video plays. During compression the spectral peaks appear to move from right to left, and this perceived direction of motion is reversed during decompression. This visual effect is highlighted by the black arrow shown on the spectra, which indicates the perceived direction of motion.