Continuous-wave fiber optical parametric amplifier with 60-dB gain using a novel two-segment design

We have obtained 60 dB of internal (ON-OFF) gain with a continuous-wave fiber optical parametric amplifier by using an isolator between two fiber segments to increase the pump stimulated Brillouin scattering threshold. Subdecibel penalties were measured for transmission of 10-Gb/s signals, with 35 dB of gain.