How to distinguish the wavelength by the color of the pull ring of the optical module?
In order to distinguish their optical modules,different manufacturers can distinguish them by their wavelength,transmission distance,package,etc.do you know any other methods?
Commonly used optical modules have four wavelengths,850nm,1310nm,1490nm and 1550nm.Among them,the pull ring color of the Gigabit SFP optical module 850nm is black,the pull ring color of 1310nm is blue,and the pull ring color of 1490nm is purple.However,the pull ring color of 1550nm is usually yellow,and we usually use the green pull ring for optical modules over 80km.
See the table for details:
