STRICT NATURAL MODE MULTI/DEMULTIPLEXER AND STRICT NATURAL MODE MULTIPLEX TRANSMISSION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a strict natural mode multi/demultiplexer and a strict natural mode multiplex transmission system with which it is possible to selectively multiplex or demultiplex a strict natural mode of multi-mode fibers.;SOLUTION: A strict natural mode multi/demultiplexer 1 comprises: an LP mode multi/demultiplexer 3 for multiplexing/demultiplexing an LP mode in order to selectively excite a strict natural mode and separate a transmission channel from a received strict natural mode on the basis of a relationship of linear combination between the LP mode and the strict natural mode; a polarization rotator 4 for rotating the polarization direction of propagation light in one optical path of a plurality of incidence/emission ends of the LP mode multi/demultiplexer; and an inphase/antiphase generation separator 2 for generating/separating an inphase component and an antiphase component based on the relationship of linear combination between the LP mode component and strict natural mode component of the LP mode multi/demultiplexer and polarization rotator.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT