| With the development of marine environmental monitoring technology and the continuous improvement of demand, the monitoring parameters have expanded from the traditional hydrological parameters such as temperature and salinity to various biochemical parameters such as nutrients, biomass, and organic matter, and the monitoring area has also extended from the near shore to the deep sea. As the core of monitoring, sensors play a vital role in monitoring system operation and data quality. This paper introduces the measurement principle, optical path structure, representative equipment and other aspects of optical biochemical sensors with mature technology and application, and enumerates the application status of various optical biochemical sensors in international large-scale ocean monitoring systems. The challenges faced by optical sensors in bio-attachment, trace detection, data analysis and quality control are described, and the development trend of intelligent, integrated and standardized optical sensors in the future is proposed, in order to provide some references for understanding the gap between China and the world advanced level and further developing the development of marine optical biochemical sensors in China. |
