Patent ID: 6636654
Filing Date: 2003-10-21
Classification: G02B,H04J

Abstract:
In a multi-channel optical switching system comprising a first thin film optical demux/mux and a plurality of optical ports including an INPUT port, a first thin film optical demux/mux port optically connected to the thin film optical demux/mux, and a second thin film optical demux/mux port optically connected to the thin film optical demux/mux, an optical add/drop multiplexer comprising:a port selector that receives light from the INPUT port and directs the light to one of the plurality of optical ports; a user input for directing the port selector to select a particular one of the plurality of ports; a first optical circulator optically connected to first thin film optical demux/mux port; and a second optical circulator optically connected to the second thin film optical demux/mux port.