Scientific, optical, measuring, signaling and control apparatus and instruments, namely, sensing and signaling devices for measurement and quality control of materials processing by laser; optical glasses; measuring glassware; optical data media, namely, blank compact discs, blank optical data carriers; optical fibre cables; optical fibers; optical active fibers; fiber laser for non-medical purposes; fiber optical amplifier; fiber optic components and modules, namely, fiber optic connectors a...