A mode-evolution compound converter for processing an optical signal that includes a first component having a fundamental transverse magnetic mode and a second component having a fundamental transverse electric mode is disclosed. Ventilating the surface of the duct with a slight yet even amount of airflow helps inhibit the accumulation of condensate and dust on the surface of the duct. The specialized jack is also configured to receive a platform component that converts the jack into one suitable for lifting automobiles with a large wheel base that will have two wheels remaining on the floor when lifted. The clock generator is configured to provide a generated clock signal and the first and second clock signals are based on the generated clock signal.