Bi-directional transmission over an elliptical core optical fiber
Systems and methods for optical communication are disclosed that include communicating data using one or more transceiver pairs coupled to a spatial-multiplexer (S-MUX); performing bi-directional transmissions over an elliptical core optical fiber to a spatial-demultiplexer (S-DEMUX) using spatial modes to communicate data in either direction between two transceiver pairs with low crosstalk and without optical circulators or wavelength-division multiplexing (WDM); and communicating data from the S-DEMUX with g one or more transceiver pairs.
1. A method for optical communication, comprising:
communicating data using one or more transceiver pairs coupled to a spatial-multiplexer (S-MUX);
performing bi-directional transmissions over an elliptical core optical fiber to a spatial-demultiplexer (S-DEMUX)using spatial modes to communicate data in either direction between two transceiver pairswith low crosstalk and without optical circulators or wavelength-division multiplexing (WDM); and
communicating data from the S-DEMUX with one or more transceiver pairs.
2. The method of claim 1 , comprising using the elliptical core optical fiber in a full-duplex communication for multiple-input and multiple-output (MIMO)-less space-division multiplexing (SDM).
3. The method of claim 2 , comprisingusing the elliptical core optical fiber in a full-duplex communication for bi-directional transmission.
4. The method of claim 2 , comprising using one or more spatial modes of the elliptical core optical fiber to carry data between a transceiver pair.
5. The method of claim 4 , wherein each spatial mode carries data in a different direction.
6. The method of claim 2 , comprising using multiple pairs of spatial modes to carry data between multiple transceivers.
7. The method of claim 2 , comprising using multiple spatial modes in different combinations.
8. The method of claim 7 , comprising assigning different spatial modes to different transceiver pairs and different directions.
9. The method of claim 2 , comprising using the laser for multiple spatial modes.
10. The method of claim 2 , comprising using MIMO-less spatial modes.
11. The method of claim 1 , comprising using elliptical core optical fiber with pre-existing communication systems.
12. The method of claim 11 , wherein a few mode (about fifteen spatial modes) elliptical core optical fiber in a full-duplex communication.
13. The method of claim 11 , wherein a multimode (greater than about fifteen spatial modes) elliptical core optical fiber in a full-duplex communication.
14. The method of claim 11 , comprising using the fiber in full-duplex communication and wherein the fiber comprises a multicore optical fiber wherein at least one of the cores is elliptical.
15. The method of claim 11 , comprising using the fiber in full duplex communication with wavelength-division multiplexing (WDM), wherein each spatial mode carries a WDM signal.
16. The method of claim 11 , comprising using the fiber in full duplex communication with fiber ribbons and wherein each fiber of the ribbon comprises an elliptical core fiber.
17. The method of claim 11 , comprising using an elliptical core optical fiber in full duplex communication with polarization division multiplexing (PDM), wherein each spatial mode carries a PDM signal.
18. The method of claim 1 , comprising using the elliptical core optical fiber with a spatial multiplexer or demultiplexer.
19. The method of claim 18 , comprising using a low loss, small form factor, low mode coupling spatial multiplexer or demultiplexer with an elliptical core optical fiber in full duplex communication.
20. The method of claim 18 , comprisingusing a spatial multiplexer or demultiplexer to connect transceiver pairs to the elliptical core optical fiber in full duplex communication.
21. The method of claim 18 , comprisingusing a spatial multiplexer or demultiplexer to combine and separate spatial modes at the same end of the elliptical core optical fiber.