What Does OHD Stand For?

OHD stands for Optical Heterodyne Detection

Optical Heterodyne Detection (OHD) is a high-sensitivity technique used in optical communications and measurements. It involves mixing a received optical signal with a local oscillator signal of a slightly different frequency to produce an intermediate frequency that is easier to analyze. This method enhances signal-to-noise ratios and enables precise detection of weak signals, making it valuable in fields such as telecommunications, spectroscopy, and coherent imaging. OHD is crucial for advancing technologies that require accurate and efficient signal detection and processing.