Patent ID: 7359583
Filing Date: 2008-04-15
Classification: G02B

Abstract:
1. An optical device, comprising: a first PM fiber comprising a core and one or more stress applying parts (SAPs); and a second PM fiber comprising a core and one or more SAPs; wherein the second PM fiber is disposed beside the first PM fiber to at least partially form a grouping that includes at least a first secondary axis and a second secondary axis defined by the first and second PM fibers, the first and second PM fibers being oriented such that a fast axis of the first PM fiber is non-parallel with respect to a fast axis of the second PM fiber, and being oriented such that at least the first secondary axis passes through the one or more SAPs and the core of the first PM fiber and passes through the core of the second PM fiber, and being oriented such that a slow axis defined by the first PM fiber lies along the first secondary axis and the fast axis defined by the second PM fiber lies along the first secondary axis, and the first and second PM fibers each maintaining a distinct optical transmission path, and the first and second PM fibers being configured and arranged such that the fast axis defined by the first PM fiber is one of: substantially perpendicular the first secondary axis; or substantially parallel to the second secondary axis.