The C-band femtosecond fiber laser module (FPL-M) is the most compact of commercially available passively mode-locked fiber lasers. The FPL-M series features a robust architecture that is insensitive to shock and vibration, and provides exceptional stability and reliability for demanding OEM applications. Advanced engineering design and consistent manufacturing process ensure the highest quality standards for OEM volume production. The wavelength can be selected throughout the C-band. The pulse width is factory selectable from 0.1 to 15 ps, with near transform-limited pulse shape and a better than 20 dB pedestal. The timing jitter is as low as 60 fs. The repetition rate can be specified from 10 to 50 MHz with either a polarization-maintaining (PM) or non-PM fiber output. With up to 20 mW output power, the FPL series is the most economical solution for applications requiring low power, such as seeding amplifier systems. An RF synchronization output is provided as a trigger signal. The FPL-M series can be used either as a stand-alone laser source with a 5 VDC power supply or separate driver, or for integration as an OEM module.