Coupling Problems with High Birefringence Fibers.
Abstract
A program to investigate the coupling problems of high birefringence fibers was initiated. A fiber is birefringent if it has a non-circular core and/or cladding, or is subjected to anisotropic stress. Currently, the loss of fibers with embedded anisotropic stress is much lower than that with non-circular core or cladding and therefore these fibers are of interest. Central to any coupling problem is the distribution of fields in the fibers. To date, very little is known relative to the fields of polarization modes in biaxial fibers. This is the main thrust of our study. We have used a perturbation method to study the fields and dispersion of polarization modes in biaxial fibers. In our approach, the inclusion or exclusion of a term is determined by the differential equation, the boundary conditions and the symmetry of the problem, and does not rely on the prior knowledge of the fields in the fibers. The dependence of the fiber birefringence on the index differential and index anisotropy has been studied. Now that the fields in high birefringent fiber are known, the excitation of high birefringent fibers can be analyzed. Methods for studying these excitation problems are indicated and some of the results are presented.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1985
- Accession Number
- ADA165150
Entities
People
- Chin-lin Chen
Organizations
- Purdue University