Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1534737 | Optics Communications | 2014 | 5 Pages |
Abstract
The fundamental mode of a small-core step-index few-mode fiber, originally designed for single-mode operation at 1310/1550 nm, was selectively excited at visible wavelengths from a single-mode fiber by adiabatically tapering the fusion splice. A two-dimensional refractive index profile of the few-mode fiber was reconstructed directly from measured guided mode intensity distribution and its spatial partial derivatives with a modified end-fire coupling method using a differential inverse calculation algorithm, which applies only for single-mode guiding.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Wan-Shao Tsai, Che-Kai Chang, Fang-Wen Sheu, Yao-Hsuan Wang, Sy-Hann Chen,