US 9,813,155 B2
Bi-directional transmission over an elliptical core optical fiber
Giovanni Milione, Franklin Square, NY (US); Philip Nan Ji, Cranbury, NJ (US); Ezra Ip, Plainsboro, NJ (US); Shaoliang Zhang, Princeton, NJ (US); Yue-Kai Huang, Princeton, NJ (US); and Ting Wang, West Windsor, NJ (US)
Assigned to NEC Corporation, Tokyo (JP)
Filed by NEC Laboratories America, Inc., Princeton, NJ (US)
Filed on Dec. 21, 2016, as Appl. No. 15/385,944.
Claims priority of provisional application 62/286,010, filed on Jan. 22, 2016.
Prior Publication US 2017/0214463 A1, Jul. 27, 2017
Int. Cl. H04B 10/00 (2013.01); H04B 10/25 (2013.01); H04J 14/02 (2006.01); H04J 14/06 (2006.01); H04L 5/14 (2006.01); H04B 10/40 (2013.01); H04B 7/0413 (2017.01); H04B 10/2581 (2013.01); H04J 14/00 (2006.01)
CPC H04B 10/2503 (2013.01) [H04B 7/0413 (2013.01); H04B 10/2581 (2013.01); H04B 10/40 (2013.01); H04J 14/02 (2013.01); H04J 14/06 (2013.01); H04L 5/14 (2013.01)] 21 Claims
OG exemplary drawing
 
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.