There has been some discrepancy between a few folks I've talked to about my application so I was hoping to see what some in this group thought-
I have a small chunk of paramagnetic glass that I was going to have pulled into a fiber as a custom operation. A 635nm POLARIZED laser will be used as the light source, and a ploarimeter will measure changes to the polarization state in the fiber due to various changes like Faraday rotation.
The question I have is: Can I use a 120um diameter fiber or will it destroy the state of polarization? Obviously, cladding the fiber or manufacturing any kind of graded index cladding will be expenisve. And if I simply went to a smaller diameter (around 8-10um), would this fix the problem? I would like a fiber at least 1 meter long, with the option for much longer lengths.
Thanks for your help.