DUAL-CLAD POLARIZATION-PRESERVING OPTICAL FIBER

摘要

The invention is directed toward an optical fiber (200) taht reduces the caldding mode coupling loss (CMCL) therein. The fiber (200) includes a core (205), a cladding (220) concentrically surrounding the core (205), and at least one lossy region (215) concentrically surrounding the core. The lossy region is disposed within the cladding (220) and is slightly displaced radially from the core (205).