High-power 1664.7-nm fiber source based on Raman and parametric gain

Summary form only given. We present a CW, single-pass, coherent fiber source at 1664.7 nm based on four-wave mixing (FWM) and first and second-order stimulated Raman scattering (SRS) from two high-power pumps. The source had a 1.7-nm 3-dB linewidth and up to 371 mW of power. The two high-power pumps consisted of a CW 1454.5-nm fiber Raman laser (FRL) and a CW 1536-to-1567-nm tunable filtered amplified spontaneous emission source (FASES) based on series of erbium-doped fiber amplifiers (EDFA) and tunable bandpass filters. The pumps were combined by a wavelength-division multiplexing (WDM) coupler and launched into 9 km of dispersion-shifted fiber (DSF) with /spl sim/1550 nm zero-dispersion. Polarization controllers (PC) were used to optimize FWM in the DSF. The post-coupler powers were 0.9 W and up to 1.4 W for the FRL and the FASES, respectively.