Backward Rayleigh scattering in polarization-maintaining single-mode optical fibers has been theoretically analyzed. A simple formula for the backscattered power, which comes back again at an input portion of the fiber, is derived with a recapture factor Sxy. By applying the analysis to a polarization optical time domain reflectometry (POTDR), details of the POTDR have been made clear. The important results are that the fluctuation component in the POTDR is attributable to a polarization beat length of the fiber, and that the quantity of the polarization component occupied in the total backscattered power is determined by the optical pulse width.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering