The global optical spectrum analyzer market is expected to reach US$ 631.8 million by 2033, with a CAGR of 5.7%. This growth is driven by the increasing demand for high-speed networks, the advent of new applications, such as optical sensing and testing, and the incorporation of cutting-edge technology like artificial intelligence (AI) and machine learning (ML). The combination of optical spectrum analyzer systems with other testing and measuring tools, such as optical time-domain reflectometers (OTDRs) and optical power meters, is also a major trend in the market.