Fibercore Ltd is perhaps the world’s longest established manufacturer of single mode optical fibers for special applications. Fibercore Ltd probably ships more polarization maintaining (PM), erbium-doped and bend-insensitive singlemode fiber, to more customers, in more places, than any other company. Fibercore HB-G series of PM fibers is the clear market-leader in fiber optic gyroscopes, whilst IsoGain™ erbium-doped, SM bend-insensitive singlemode and CP cladding-pump fibers hold commanding positions in EDFA, acoustic sensor and high power FTTx amplifier applications.