Distributed spatial mode processing for spatial-mode multiplexed communication systems
AssigneeAT&T Intellectual Property I, L.P.
InventorsXiang Zhou, Peter David Magill, Lynn Nelson
Life of this patent
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Abstract
A method and system for distributed spatial mode processing is disclosed. A number of optical signals are received over an optical link. Each optical signal is received via a respective one of a number of spatial modes of the optical link. The optical link includes a particular spatial mode not used for the receiving. A first one of the number of optical signals received from a first one of the number of spatial modes is transferred to a second one of the number of spatial modes via the particular spatial mode, wherein the first one of the number of optical signals is transmitted via the second one of the number of spatial modes.
Claims20
A method comprising:
- receiving optical signals over a first group of spatial modes of an optical link, the optical link including a particular group of spatial modes not used for the receiving;
- switching the optical signals to a second group of spatial modes of the optical link for transmitting the optical signals over the second group of spatial modes, the switching resulting in a crosstalk signal on the particular group of spatial modes;
- and
- filtering the particular group of spatial modes to reduce the crosstalk signal.
A method comprising:
- receiving optical signals over a first group of spatial modes of an optical link, the optical link including a particular group of spatial modes not used for the receiving;
- transmitting the optical signal over a second group of spatial modes of the optical link;
- and
- filtering the particular group of spatial modes to reduce a crosstalk signal on the particular group of spatial modes resulting from switching the optical signals from the first group of spatial modes to the second group of spatial modes.
A system comprising:
- an optical link comprising a first group of spatial modes, a second group of spatial modes, and a particular group of spatial modes;
- a spatial mode converter configured to:
- receive optical signals over the first group of spatial modes, wherein the particular group of spatial modes is not used to receive the optical signals;
- and
- switch the optical signals to the second group of spatial modes for transmitting the optical signals over the second group of spatial modes, the switch resulting in a crosstalk signal on the particular group of spatial modes;
- and
- a filter configured to filter the particular group of spatial modes to reduce the crosstalk signal.
Dependencies are inferred from the claim text.