Integrated WDM coupler for duplex communication

摘要

An integrated wavelength division multiplexer (WDM) coupler is provided which performs multiple optical coupling functions; the WDM coupler includes a first multi-fiber end optical termination and a second multi-fiber end optical termination; a filter is provided between the optical terminations which reflects certain light and passes certain light; the first and second optical terminations and the filter are arranged in relation to one another so as to perform at least one coupling function upon each of at least two separate non-bi-directional optical signals.