Changes

On January 16, I began to bundle light guides for milling by myself. I put a collar around the fibers at one end, then put another collar on at the same end. Once the second collar was tight, I slid the first collar toward the other end of the fibers. Then I noticed that at certain points there was a gap between the fibers in the bundle and the collar even though the collar was tight. Consequently, a few fibers could slip even though most could not. I brought the problem to Ann Marie and Liana, and Liana came over to fix the problem. Eventually the fibers were tight to our satisfaction.

On January 16, I began to bundle light guides for milling by myself. I put a collar around the fibers at one end, then put another collar on at the same end. Once the second collar was tight, I slid the first collar toward the other end of the fibers. Then I noticed that at certain points there was a gap between the fibers in the bundle and the collar even though the collar was tight. Consequently, a few fibers could slip even though most could not. I brought the problem to Ann Marie and Liana, and Liana came over to fix the problem. Eventually the fibers were tight to our satisfaction.

On January 17, I swept the lab and polished two bundles of light guides. We want to know what dirty fibers look like and how they affect performance. To that end, I took photographs of calcium deposits from straightening and specks from milling on the fibers. Then I helped Ann Marie take more photos. Since there was too much glare on the fibers to take a good photo from directly above them, I shaded the fibers with my notebook while Ann Marie took pictures. Then Ann Marie wanted pictures of light shining through the dirty fibers. She used a green laser. I held the switch to shine the laser and she took pictures.

On January 17, I swept the lab and polished two bundles of light guides.  

 

We want to know what dirty fibers look like and how they affect performance. To that end, I took photographs of calcium deposits from straightening and specks from milling on the fibers. Then I helped Ann Marie take more photos. Since there was too much glare on the fibers to take a good photo from directly above them, I shaded the fibers with my notebook while Ann Marie took pictures. Then Ann Marie wanted pictures of light shining through the dirty fibers. She used a green laser. I held the switch to shine the laser and she took pictures. Where there were fingerprints on the fibers, the light was brighter because it was leaking. Ann Marie also got pictures of rust on the fibers.