US 9,813,158 B2
Multimode elliptical core optical data transmission
Giovanni Milione, Franklin Square, NY (US); Ezra Ip, Plainsboro, 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 Apr. 18, 2016, as Appl. No. 15/131,307.
Claims priority of provisional application 62/286,042, filed on Jan. 22, 2016.
Prior Publication US 2017/0214465 A1, Jul. 27, 2017
Int. Cl. H04B 10/00 (2013.01); H04B 10/2581 (2013.01); H04Q 11/00 (2006.01); H04B 10/50 (2013.01); H04B 10/40 (2013.01); H04B 10/516 (2013.01); H04J 14/00 (2006.01)
CPC H04B 10/2581 (2013.01) [H04B 10/40 (2013.01); H04B 10/503 (2013.01); H04B 10/516 (2013.01); H04J 14/00 (2013.01); H04Q 11/0005 (2013.01); H04Q 2011/0015 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An optical transceiver, comprising:
an optical transmitter configured to launch a first transmission beam onto a multimode optical fiber, having an elliptical core, without splitting the first transmission beam into distinct polarizations, said optical transmitter comprising:
a mode converter configured to convert each of a plurality of optical beams to distinct respective spatial modes;
a modulator configured to modulate date onto each of the plurality of optical beams; and
an optical combiner configured to combine the plurality of optical beams into the first transmission beam; and
an optical receiver configured to receive a second transmission beam from a multimode optical fiber, having an elliptical core, without detecting distinct polarizations in the second transmission beam, said optical receiver comprising:
a mode de-converter configured to split the second transmission beam into a plurality of optical beams, each having a distinct respective spatial mode;
a plurality of sensors, each configured to convert a respective optical beam to an electrical signal; and
a demodulator configured to demodulate the plurality of electrical signals to extract respective data from each of the plurality of electrical signals.