Optical add drop multiplexers with asymmetrical filtering

An interconnection system comprising:

• an optical fiber supporting an interconnection;
• and
• an optical add-drop multiplexer comprising:
• a first input port configured to receive an input signal having a first wavelength channel, a second wavelength channel, and a third wavelength channel;
• a demultiplexer having a first filter configured to:
• pass the first wavelength channel and the second wavelength channel as a group, and
• filter the third wavelength channel;
• a multiplexer having a second filter configured to:
• pass the second wavelength channel and the third wavelength channel as a group, and
• filter the first wavelength channel;
• and
• a first output port configured to output, via the optical fiber, an output signal comprising the second wavelength channel of the input signal.

A controller comprising:

• processing circuitry coupled to a memory, the processing circuitry and memory configured to configure an optical add-drop multiplexer comprising:
• a first input port configured to receive an input signal having a first wavelength channel,
• a second wavelength channel, and a third wavelength channel;
• a demultiplexer having a first filter configured to:
• pass the first wavelength channel and the second wavelength channel as a group, and
• filter the third wavelength channel;
• a multiplexer having a second filter configured to:
• pass the second wavelength channel and the third wavelength channel as a group, and
• filter the first wavelength channel;
• and
• a first output port configured to output an output signal comprising the second wavelength channel of the input signal.