(Color online) Layout of the all-fiber Cherenkov source. HR, high-reflectivity pigtailed mirror; WDM, 980/1030 wavelength division multiplexer; LD, single-mode pumping diode at 974 nm; PM SC-PBG, PM all-solid photonic bandgap fiber; SESAM, semiconductor saturable absorber mirror; PISO, polarization-maintaining isolator; PFC, 80/20 polarization filter coupler; HC-PCF, laser pulse compressor hollow-core PCF; CR fiber, highly nonlinear fiber for CR generation. (Inset) Oscilloscope reading of the mode-locked pulse train.