| CPC H03M 1/12 (2013.01) [H03M 1/00 (2013.01); H03M 1/06 (2013.01); H03M 1/10 (2013.01)] | 19 Claims | 

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               1. A method for processing a signal, the receiving comprising: 
            supplying to a first modulator: 
                a first RF signal, and 
                  a first optical signal, wherein the first modulator is configured to output a first output signal; 
                generating a first intensity signal that is based on the first output signal, wherein the first intensity signal is further based on a first biasing parameter; and 
                providing a first intensity signal to a first analog-to-digital converter (ADC) to create a first digital signal processable by a signal processing unit. 
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