A new single-mode fiber polarization scrambler based upon a simple fib
er-ring structure and usable with a narrowband light source is describ
ed. The degree of polarization decreases by more than -20 dB when the
input is 100% polarized, Design criteria and principles are discussed.
We demonstrate that the polarization scrambler eliminates the effects
of induced polarization fluctuation in a polarization-sensitive fiber
-optic system. (C) 1997 Academic Press.