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GB9702084D0
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Add/drop multiplexer
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GB9623912D0
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Surge protector for power feed line
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GB9622244D0
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Transient suppression in optical wavelength division multiplex network
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GB9622245D0
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Optical polarisation scrambling
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GB9621746D0
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Semiconductor laser amplifiers for transient suppression in optical wavelength division multiplex networks
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GB9617396D0
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Improvements in or relating to optical add/drop wavelength division multiplex systems
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GB9612156D0
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Fibre optic transmission
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GB9606576D0
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Improvements in or relating to optical modulation
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GB9604592D0
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A simple wave length switching technique for branched transmission systems
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GB9604427D0
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A branching unit
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GB9604282D0
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Modular cable tanks
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GB9604304D0
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Mounting of fibre grating for pump stabilisation in amplified repeaters
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GB9604285D0
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Novel terminal equipment receiver design for optically amplified fibre communications systems
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GB9604303D0
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Chromatic pre-chip in NRZ transmitter
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GB9604336D0
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Amplifier
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GB9604280D0
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Two stage amplifier
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GB9604322D0
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EOTDR three wavelength signalling
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GB9604283D0
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Power combiner for pump lasers
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GB9604281D0
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A fibre raman laser for converting wavelengths or a broadband raman optical amplifier
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GB9604287D0
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Improvements in or relating to optical modulation
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