What is the primary application for 780 nm and 850 nm lasers?
A. The 780 nm laser was originally developed for CD applications, while the 850 nm laser was originally developed for short-haul communication. In the early days of fiber communications (late ’70’s), the 830 nm technology was very popular and it is known as the optical communications “first window.” In optical communication, 780 nm and 850 nm are mainly used for datacom transceiver modules.
