The modal distribution of a novel elliptical hollow optical fiber is experimentally and numerically characterized. The fiber has a central elliptical air hole surrounded by a germanosilicate lanceolate ring core. Experiments reveal that the fiber behaves like a dual core waveguide and it is found that the differential group delay of each core decreases with wavelength with a PMD coefficient slope of ∼10-2 ps/m/THz. Experimental results are also compared with numerical modeling based on scanning electron microscopy images.
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics