Optical fiber sold for incorporation into fiber optic cables; fiber optic cables and their connecting elements, namely, connectors and closures; photonic products, namely devices that alter the pulse width of optical signals transmitted in an optical telecommunication system, telecommunication system hardware, namely, fiber optic amplifiers, attenuators, getters, grattings, fiber brag grattings, ban splitters, beam splitters, couplers, active photonic devices, passive photonic devices, dense ...