A distributed hybrid-fiber Raman amplifier(H-FRA) with 25 km single-mode fiber(SMF) and a section of photonic crystal fiber(PCF) is proposed and demonstrated.Its on-off gain and noise performance are experimentally investigated in detail.In our experiment,the H-FRAs with three pump schemes and two PCF types with different parameters and length,which are placed at different location of the fiber link,were considered.The experimental results indicate that the optical signal-to-noise ratios(OSNRs) of the H-FRAs are always better when the PCFs are located at the span end.Whereas,the on-off gains are not only dependent on the position of the PCF in the span,but also related to the PCF loss and pump configuration.The on-off gain and noise performance are both better when the PCF is inserted at the span end for backward-and bi-directional-pumped schemes.