title: High performance optical wavelength multiplexer-demultiplexer.
abstract: The principle of an optical wavelength multiplexer-demultiplexer is described in which the signals undergo repeated reflections from special filter elements that can be designed for a wide range of cross-talk ratios. The insertion losses of these units can be quite small and they can be implemented to provide simultaneous multichannel two-way transmission. In a preliminary investigation of an experimental prototype an insertion loss of 0.5 dB and a cross talk of -35 dB were demonstrated. The multiplexer-demultiplexer is expected to have a long life and high reliability.
authors: J A
authors: JA
authors: Dobrowolski
authors: E H
authors: EH
authors: Hara
authors: B T
authors: BT
authors: Sullivan
authors: A J
authors: AJ
authors: Waldorf