VARIABLE WAVELENGTH DEMULTIPLEXER, VARIABLE WAVELENGTH MULTIPLEXER, AND WAVELENGTH ROUTING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a variable wavelength demultiplexer, a variable wavelength multiplexer, and a wavelength routing apparatus, which can demultiplex light of arbitrary wavelength in a multi-wavelength transmission system.;SOLUTION: An optical filter element 15 is composed by sticking to a transparent substrate a filter chip that has a wavelength characteristic corresponding to each wavelength component of wavelength multiplexed light. With the wavelength multiplexed light made incident on this optical filter element 15 through an optical fiber 11, the transmitting wavelength characteristic differs by an incident filter chip 16. Accordingly, by moving the optical filter element 15 in the distribution direction of the filter chip 16, a light incident position is varied, thereby enabling different selective characteristic to be obtained.;COPYRIGHT: (C)2003,JPO