A directly modulated laser with a threshold current of 1 mA is used to occasionally transmit digital data over an optical fiber from a remote location to a central monitoring center. To save on power...

A directly modulated laser with a threshold current of 1 mA is used to occasionally transmit digital data over an optical fiber from a remote location to a

central monitoring center. To save on power consumption the laser is operated

at zero bias when not transmitting. If the peak pulse current of the laser is

5 mA and its carrier lifetime for spontaneous emission is 300 ns, what is the

delay time before the first pulse is transmitted after drive current is applied?