DRIVER FOR MULTI-STAGE WAVE GUIDE MODULATOR AND METHOD
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Accused Products
Abstract
A modular hub driver architecture may include a multi-delay block configured to provide an enhanced delay match among N distinct stages of a distributed modulating electro-optical interface core. The electro-optical multi-core modulator driver may include an input impedance matching stage and a pre-conditioning circuit configured to generate a number M, an integer divisor of N, of delayed replicas of an electrical modulating signal. The electro-optical multi-core modulator may include an array of M launch buffers of the replica signals, and an array of M multi-delay blocks, each including delay circuit modules differently cascaded on distinct signal paths, and configured to receive, at respective inputs, the M replica signals and to output N/M differently delayed replicas of the input signals, each driving a correspondent output stage of one on the N electro-optical interface cores.
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Citations
28 Claims
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1-9. -9. (canceled)
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10. A driver for a number N of electro-optical interface cores each driven by a respective output stage of a multi-stage electro-optical modulator, the driver configured to receive an electrical modulating signal at an input and comprising:
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an input impedance matching stage; a pre-conditioning circuit configured to generate a number M, of delayed replicas of the electrical modulating signal, wherein M is an integer divisor of the number N of cores; an array of M launch buffers of the replica signals; and an array of M multi-delay blocks, each multi-delay block comprising a plurality of delay circuits differently cascaded on distinct signal paths, said array of M multi-delay blocks configured to receive, at respective inputs, the M replica signals, and to output N/M differently delayed replicas of the M replica signals, and each driving a corresponding output stage of one on said N electro-optical interface cores. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A driver for a number N of electro-optical interface cores, the driver comprising:
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a pre-conditioning circuit configured to generate a number M, of delayed replicas of an electrical modulating signal, wherein M is an integer divisor of the number N of cores; and an array of M multi-delay blocks, each multi-delay block comprising a plurality of delay circuits differently cascaded on distinct signal paths, said array of M multi-delay blocks configured to output N/M differently delayed replicas of the M replica signals. - View Dependent Claims (18, 19, 20, 21)
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22. A system comprising:
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an optical waveguide; a number N of electro-optical interface cores distributed along said optical waveguide; and a driver coupled to the N electro-optical interface cores and comprising a pre-conditioning circuit configured to generate a number M, of delayed replicas of an electrical modulating signal, wherein M is an integer divisor of the number N of cores, and an array of M multi-delay blocks, each multi-delay block comprising a plurality of delay circuits differently cascaded on distinct signal paths, said array of M multi-delay blocks configured to output N/M differently delayed replicas of the M replica signals. - View Dependent Claims (23, 24, 25, 26)
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27. A method of driving a number N of electro-optical interface cores, the method comprising:
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generating a number M of delayed replicas of an electrical modulating signal, M being an integer divisor of the number N of cores; amplifying the M delayed replica signals; and conveying the amplified replica signals to respective signal path inputs of different combinations of a plurality of delay circuits for generating N/M differently delayed replicas of the amplified replica signals and each driving a corresponding output stage of one on the N electro-optical interface cores. - View Dependent Claims (28)
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Specification