POLARIZED WAVE MAINTAINING TYPE ARRAY WAVEGUIDE GRATING TYPE OPTICAL MULTIPLEXER/DEMULTIPLEXER, POLARIZED WAVE MAINTAINING TYPE ARRAY WAVEGUIDE GRATING TYPE OPTICAL MULTIPLEXER/DEMULTIPLEXER MODULE AND HIGH DENSITY WAVELENGTH MULTIPLEX OPTICAL COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an array waveguide grating type optical multiplexer/demultiplexer which uniformizes loss between channels, reduces the loss and has a high polarized wave extinction ratio.;SOLUTION: In the polarized wave maintaining type AWG of large double refractivity having the polarized wave extinction ratio 20 dB, for connecting positions at the time of connecting a plurality of output waveguides 5 to an output side slab waveguide 4 at an equal interval, the connecting position of the output waveguide 5 to which TE polarized waves are inputted and the connecting position of the output waveguide 5 to which TM polarized waves are inputted are shifted in mutually different directions, and the output waveguides 5 are connected to the output side slab waveguide 4 so as to alternately differ the interval of the connecting positions of the adjacent output waveguides 5. Thus, the loss center wavelength of the TE polarized waves and the loss center wavelength of the TM polarized waves are matched.;COPYRIGHT: (C)2003,JPO