If an EDFA operating at a wavelength of 1536 nm develops a stimulated emission power of 850 mW, how many photons/s are being generated? What is the gain for a Fabry-Perot laser amplifier with both...

If an EDFA operating at a wavelength of 1536 nm develops a stimulated emission power of 850 mW, how many photons/s are being generated?

What is the gain for a Fabry-Perot laser amplifier with both mirror reflectivities

= 65% if the single-pass gain is 15?