|So here's some idea of what a nylon (SAN) 5 mil tippet looks like IN AIR in sunlight.|
There are three sets of three photos.
First Set is crossection of tippet and suns rays with perfect index match (N = 1.0). This is just to set the sunlight level at 1,000W/m^2 or 100 mW/cm^2.
Second set is with tippet index set to 1.576 for SAN, same as Nylon, and now shows cylindrical lensing effect, and leader shadow. No Reflections shown, so polarised ray splitting is turned off.
Third set is with ray splitting turned on, so now reflections show up.
In each set, first picture is crossection of leader immersed in sunlight. Sun is on the left, at 107 times sun diameter away from leader, giving 1/2 degree angular diameter. Only 1,000 rays are shown in figure, but the ray trace actually ran 10 million rays for the data plots. The ray color changes at each surface intersection, for clarity, and the blue-green switch is occurring at a detector set at the sun image best focus.
Second picture in each set is a false color plot of what that detector in the middle is seeing. Red at top is brightest, blue at bottom is lowest; zero in this case; very easy to understand.
Third picture in each set is a vertical section through the false color plot to show the actual profile, which is pretty constant all along the leader. I set the cutoff threshold for the propagation of daughter rays at 3%, so any daughter ray, less than 3% of the parent is 86'd. Later on, I'll take it down to 0.1% cutoff, so you can see all the trash that is really generated. At that level the various ghost images start to show up, but it gets pretty cluttered.
But I'd like to put it into water first. I'll use the same SAN sub for nylon first, then I'll do the best shot at the fluoro index, I can find a material for.
[click here to display pictures]