... long-life laser stability. The microprocessor software monitor the lasers’ working state, the Digital Panel (VFD) displays the operating parameters. Once ... off laser power, red light goes on to warn, digital panel prompts cause of troubles., a detailed report of the device ... any time.4, Adopting JDSU, Bookham and Fitel laser. 5,LCD displays the parameters, functions and trouble alarm. 6, Switch power ...