Patent ID: 7333686
Filing Date: 2008-02-19
Classification: G02B,H04J,H04Q

Abstract:
1. A re-configurable optical channel dropping de-multiplexer, comprising: an 1×2 optical switch having an input, a first output, and a second output, the input of the 1×2 optical switch receiving an optical input comprising a plurality of channels; a first 2×2 optical switch having a first input, a second input, a first output, and a second output, the first input of the first 2×2 optical switch optically coupled to the first output of 1×2 optical switch; and a first channel band pass filter assembly having an input, a first output, and a second output, the input of the first channel band pass filter assembly optically coupled to the 1×2 optical switch, the first output of the first channel band pass filter assembly transmitting a first channel in the plurality of channels, the second output of the first channel band pass filter assembly reflecting all other channels except for the first channel to the first 2×2 switch; wherein, in a first configuration, the input of the 1×2 optical switch is optically coupled to the first channel band pass filter assembly, the first channel band pass filter assembly transmitting the first channel in the plurality of channels to the first output of the first channel band pass filter assembly, the first channel band pass filter assembly reflecting all other channels except for the first channel to the second output of the first channel band pass filter assembly; wherein, in a second configuration, the input of the 1×2 optical switch is optically coupled to the first 2×2 optical switch for passing through all of the a plurality of channels.