TRIPLEXER

摘要

PURPOSE: A triplexer which reduced the size of a whole device by dividing a three wavelength band into triple waveguide at once through a coupler and path difference is provided to connect a coupler using three optical waveguide and a path difference generator, thereby satisfying wide band width. CONSTITUTION: A triplexer(1) includes a first triple waveguide coupler(2), a second triple wave guide coupler, and a path difference adjustment unit(3). The path difference adjustment unit is comprised of three waveguide. The three waveguide is connected between the first triple waveguide coupler and the second waveguide coupler. At least two of the three waveguide has different path difference. An optical signal inputted as an input waveguide(1a) can be outputted according to a wavelength as three output waveguides(5a,5b,5c).