|
|
| Noise in Optics |
In many optical systems, noise plays an important role.
A prominent example in fiber optics are deviations of the core from a
circular cross-section to elliptic cross-sections whose ellipticity is
changing within the fiber. Given the fact that it is practically
impossible to gain complete information about those variations of the
core, they can be described as stochastic perturbations, leading to
so-called polarization mode dispersion (PMD). Since they are taking
place on small scales, the main question is how they influence
macroscopic observable, hence how they become manifest on larger
scales. My main collaborators are Ildar Gabitov (Arizona),
Richard Moore (Newark), Misha Chertkov (Los Alamos), and Jie Yu
(Manchester). Recent research focuses on:
- Development of fast solvers for nonlinear PMD
- Coarse-graining noise in the transition from
nonlinear Maxwell's equations to the NLSE
- Application of importance-sampling for identifying
rare broadening events in optical fiber links
Read more (selected publications):
M. Chertkov, I. Gabitov, I. Kolokolov, T.
Schäfer: Periodic Compensation of Polarization Mode Dispersion, JOSA
B 21 (2004) 486-498.
T. Schäfer, R. O. Moore, C. K. R. T. Jones: Pulse
propagation in media with
deterministic and random dispersion
variations,
Optics Communications 214 (2002) 353-362. |
 |
|
|
