OPTICAL MULTIPLEXER AND DEMULTIPLEXER (DeMUX) FOR DENSE WAVELENGTH DIVISION MULTIPLEXING

摘要

Proposed is a technical configuration capable of implementing a wavelength division multiplexer having more dense frequency spacing between channels to a level of 1/2 or less of standard frequency spacing using optical filter technology of standard frequency spacing. According to the present invention, a wavelength division multiplexer comprises: a plurality of first optical filters having predetermined frequency spacing; and a plurality of second optical filters having the same frequency spacing as the first optical filters, wherein a passband is offset by 1/2 of the predetermined frequency spacing compared to a passband of the first optical filters. In the second optical filters corresponding to a passband frequency of the first optical filters, input units of the optical filters are connected to passing units of the first optical filters, so that an optical signal primarily separated from the first optical filters is separated again into an optical signal of each of the passing unit and reflection unit in the second optical filters.;COPYRIGHT KIPO 2020