Changes

In Figure 7, I shined a laser through the new light guide and used a paper bowl to block ambient light from the laser.  To the left of the bowl, one sees bright spots on an otherwise dimly lit fiber.  This corresponds to the position of the clamp.

In Figure 7, I shined a laser through the new light guide and used a paper bowl to block ambient light from the laser.  To the left of the bowl, one sees bright spots on an otherwise dimly lit fiber.  This corresponds to the position of the clamp.

Examining Figure 8 reveals several marks along the right half of the fiber.  The leftmost striation is most well-defined, and beyond that the fiber does not spill light.  I hypothesize that the clip may have been re-positioned, leaving other scratches, but the leftmost band was the farthest down the fiber that the clip was placed. Some of the poorly defined light loss from the right might simply be due to the position of the laser.

Examining Figure 8 reveals several marks along the right half of the fiber.  The leftmost striation is the most well-defined, and beyond that the fiber does not spill light.  I hypothesize that the clip may have been re-positioned, leaving other scratches, but the leftmost band was the farthest down the fiber that the clip was placed. Some of the poorly defined light loss from the right might simply be due to the position of the laser.

Figure 9 offers an alternate view with less ambient light.

Figure 9 offers an alternate view with less ambient light.