Patent ID: 9067207
Filing Date: 2015-06-30
Classification: B01L,G01N

Abstract:
1. A DNA analyzer, comprising: an interface for coupling a microfluidic chip to the DNA analyzer, wherein the microfluidic chip includes: a detection module configured to be optically coupled with the microfluidic chip that includes: a photo-detector configured to generate an electrical detection signal in response to the filtered optical signal; a modulation signal generator coupled to the filter module, the modulation signal generator being configured to generate a modulation signal having a modulation frequency, and a reference signal having the modulation frequency, the modulation signal being used by the filter module to modulate the filtered optical signal; and a phase-sensitive detector configured to receive the reference signal and the electrical detection signal corresponding to the modulated filtered optical signal, and demodulate the electrical detection signal based on the reference signal to remove noise due to the photo-detector.