Apparatus and method for pcr diagnosis based on multi-wavelength light source

An apparatus for a polymerase chain reaction (PCR) diagnosis comprising:

• a transmitter including a multi-wavelength light source outputting a first light source signal and a second light source signal, which have different wavelengths, and configured to apply the first light source signal and the second light source signal to a DNA sample;
• a code generator configured to generate a first code signal and a second code signal corresponding to the first light source signal and the second light source signal, respectively;
• a delay controller configured to generate a first delay signal and a second delay signal corresponding to the first code signal and the second code signal, respectively;
• and
• a receiver configured to compare the first and second fluorescent signals emitted from the DNA sample with the first and second delay signals, and configured to accumulatively integrate the first fluorescent signal or the second fluorescent signal based on the comparison result, and
• wherein the first fluorescent signal is emitted from the DNA sample in response to the first light source signal, and the second fluorescent signal is emitted from the DNA sample in response to the second light source signal.