Influence of the longitudinal mode field in grating scattering from weakly guided optical fiber waveguides.
We measured the polarization dependence of light scattered from a tilted fiber grating and found disagreement with previous volume-current perturbation analysis. However, by including the longitudinal E field of the guided wave we were able to obtain good agreement, demonstrating that, although it is small, this component cannot be neglected when scattering of weakly guided waves is considered. A first-order approximation formula for the polarization dependence was also obtained and is shown to be accurate within most of the resonance band of scattering.
Li
Yufeng
Y
Department of Electrical and Computer Engineering and The Institute of Optics, University of Rochester, Rochester, New York 14627, USA. yuli@ece.rochester.edu
Wielandy
Stephan
S
Carver
Gary E
GE
Durko
Heather L
HL
Westbrook
Paul S
PS