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[Telecommunications apparatus and instruments, namely, telecommunications switches, dispersion-compensation modules for use in telecommunications networks; optical demultiplexors, optical multiplexors, add-drop multiplexors; optical and/or optoelectronic apparatus and instruments,], namely, fiber-optic light and image conduits and fiber-optic cables, [optical couplers, optical switches, mode filters, polarisers, mode-field converters, pulse compressors, wavelength converters, amplifiers, Raman amplifiers, ]optical fibre lasers, [conditioners, regenerators,] compensators, dispersion compensators, optical sensors, optical fiber sensors, [optical-signal regenerators, optical-phase conjugators; optical goods, namely, optical filters;] lasers, not for medical purposes; light-conducting filaments in the nature of fiber optics; optical waveguides; waveguides for high-power beam delivery, namely, fiber-optic high-power light conduits; laser welding machines and laser welders; laser cutting machines and laser cutters; optical fibers, [polarisation-altering optical fibres, dispersion-compensating optical fibres, dispersion-shifted optical fibres,] polarisation-maintaining optical fibres, [nonlinear optical fibres; optical-fibre amplifiers;] optical-fibre lasers, not for medical use; microstructured optical material; microstructured optical fibres; photonic-crystal material; photonic-crystal devices, namely, photonic-crystal fibres, waveguides, [switches, dispersion-compensators,] optical fibers,[ filters, ]pulse compressors, [wavelength converters, Raman amplifiers, laser welding machines and laser welders,] laser cutting machines and laser cutters, [amplifiers], sensors, photonic-crystal lasers, not for medical use; [optical frequency-metrology devices, namely, frequency-comb generators, supercontinum-generators]