Bridge fiber, multicore fiber unit, multicore bridge fiber and multicore multicore fiber unit

摘要

The bridge fiber (10) has an axisymmetric core (11) surrounded by a clad (12) and a cladding (12) and centered on a central axis of a clad (12).The core (11) is a common core connected to two or more cores (21, 31) in the respective multi core fibers (20, 30).The common core is the sum of the number of modes of light propagated by each core (21) connected to the common core in the multicore fiber The sum of the total number of modes of light propagated by each core (31) connected to the common core in the multicore fiber (30) and the number of modes of the least number of modes are propagated.