Resolving optical modulation spectrum based on boosted Gold's Ratio deconvolution

The instrument response function becomes a major roadblock when a grating-based optical spectrum analyzer is operated at around diffraction limit. We propose a novel method for resolving the optical modulation sidebands with improved accuracy based on boosted Gold's Ratio deconvolution algorithm. Theoretical description and experimental demonstration show that our method is applicable for extracting phase modulation sidebands from optical spectrum analysis with super-resolution capability.