‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Sunday, September 8, 2019 9:27 PM, jim bell <jdb10987@yahoo.com> wrote: ...
In order to evaluate this as a proposed idea, a physicist would consider:
1. The loss of manufactured optical waveguides did indeed hit an unexplained 'floor' in the early 1980s, about 0.16 db/kilometers of loss. 2. The manufacturers and users of such fibers have had a very powerful motivation to figure out how to lower their loss to well below 0.16 db/kilometers, for nearly 40 years. 3. Nothing has yet been found, or it would have been employed. 4. Photons do indeed possess an oscillating magnetic field. 5. A nucleus of an isotope with 'spin' does indeed behave as magnetic dipole. 6. Such a nucleus should be mechanically affected by the passage of light. 7. Energy should be transferred from that light to the nucleus, and thus the atom, as the light passes. 8. Removing most or all atoms with an electromagnetic 'spin' should remove this loss mechanism, in proportion to the amount of such isotopes remaining.
Do you have any other ideas as to how that loss is manifested?
i wonder if Rayleigh scattering is sufficient to account for the floor? unfortunately this is quite complicated in glass media; i don't know how to answer the question :/ (e.g. the static shear modulus of glass multiplies the factors involved in determining a scattering coefficient...) best regards,