Transceiver for MM links up to 2k I have 2 links of 1.5 mm f.o mm c / u I want to know if a transceiver GLC-GE-100FX would work for me, why and what are its variations.

The Cisco GLC-SX-MM **for gigabit** should be compatible with your 2960 \- some vendors offer compatible SFPs using 1310 nm wavelength for 2 km MMF ("Cisco GLC-SX-MM-2K compatible").