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US 8,942,518 B2Granted
Flexible optical modulator for advanced modulation formats
AssigneeAlcatel Lucent
InventorPietro Bernasconi
Life of this patent
Estimating the term…
Abstract
An apparatus comprising a cascaded set of deinterleavers. A first optical deinterleaver is configured to receive a first optical signal and a second optical signal. A second optical deinterleaver is configured to receive the second optical signal and a first optical output of the first optical deinterleaver. A third optical deinterleaver is configured to receive a second optical output of the first optical deinterleaver. The apparatus comprises an optical power splitter configured to provide the second optical signal received by the first optical deinterleaver and by the second optical deinterleaver.
Claims19
An apparatus comprising:
- a cascaded set of deinterleavers including:
- a first optical deinterleaver configured to receive a first optical signal and a second optical signal;
- a second optical deinterleaver configured to receive the second optical signal and a first optical output of the first optical deinterleaver;
- a third optical deinterleaver configured to receive a second optical output of the first optical deinterleaver;
- an optical power splitter configured to provide the second optical signal received by the first optical deinterleaver and by the second optical deinterleaver;
- and
- an optical switch configured to receive an input optical signal and to switch the optical input signal, either to:
- serve as the first optical signal when the optical input signal is to be modulated according to a single-polarization multiplexed format, or,
- serve as the second optical signal when the optical input signal is to be modulated according to a polarization multiplexed format.
6 more elements
An apparatus, comprising:
- a cascaded set of deinterleavers including:
- a first optical deinterleaver configured to receive a first optical signal and a second optical signal;
- a second optical deinterleaver configured to receive the second optical signal and a first optical output of the first optical deinterleaver;
- a third optical deinterleaver configured to receive a second optical output of the first optical deinterleaver;
- and
- an optical power splitter configured to provide the second optical signal received by the first optical deinterleaver and by the second optical deinterleaver, wherein the first, second and third optical deinterleavers each include at least a double-staged Mach-Zehnder filter, wherein:
- a first-stage Mach-Zehnder filter of each of the deinterleavers sends separate optical output signals to subsequent pairs of second-stage Mach-Zehnder filters of each of the deinterleavers.
4 more elements
A system, comprising:
- an input apparatus, including:
- a cascaded set of deinterleavers including:
- a first optical deinterleaver configured to receive a first optical signal and a second optical signal;
- a second optical deinterleaver configured to receive the second optical signal and a first optical output of the first optical deinterleaver;
- and
- a third optical deinterleaver configured to receive a second optical output of the first optical deinterleaver;
- and
- an optical power splitter configured to provide the second optical signal received by the first optical deinterleaver and by the second optical deinterleaver;
- and
- a data drive module configured to receive a first optical output and a second optical output of the second optical deinterleaver, and, a first optical output and a second optical output of the third optical deinterleaver.
7 more elements
A method, comprising:
- deinterleaving an input optical signal including:
- passing the input optical signal through an optical switch wherein the optical switch is configured to receive the input optical signal and to switch the optical input signal, either to:
- serve as a first optical signal when the optical input signal is to be modulated according to a single-polarization multiplexed format, or,
- serve as a second optical signal when the optical input signal is to be modulated according to a polarization multiplexed format
- receiving the first optical signal and the second optical signal into a first optical deinterleaver;
- receiving the second optical signal and a first optical output of the first optical deinterleaver into a second optical deinterleaver;
- receiving a second optical output of the first optical deinterleaver into a third optical deinterleaver;
- and
- providing from an optical power splitter the second optical signal received by the first optical deinterleaver and received by the second optical deinterleaver.
6 more elements
Dependencies are inferred from the claim text.