CWDM (Coarse Wavelength Division Multiplexing) modules use 18 different wavelengths between 1270nm and 1610nm, each with a unique pull ring color for easy identification. This color coding enables fast troubleshooting and port mapping in complex CWDM networks. Every optical transceiver operates at a specific wavelength, typically. Standardized pull tab color coding is widely adopted in data center asset management, warehouse stock classification and on-site rapid fault checking; users can preliminarily confirm MM/SM, transmission distance and wavelength before checking module specification label. Among them, the color of the pull ring corresponding to 850nm of the Gigabit SFP module is. The color of the small pull tab on an optical module, while seemingly insignificant, hides a wealth of crucial information. Let's uncover its mysteries with Xiaoyi. The topic of specifications and physical traits is one aspect of this question; another often-overlooked detail is the color of the pull tab.
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