We experimentally utilize orthogonal combinations of multiple Laguerre-Gaussian modes in a 400-Gbit/s free-space link with limited-size aperture or misalignment. Power loss and crosstalk could be reduced by up to ∼15 dB and ∼40 dB, respectively.
|Title of host publication||2020 Optical Fiber Communications Conference and Exhibition, OFC 2020 - Proceedings|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|State||Published - Mar 2020|
|Event||2020 Optical Fiber Communications Conference and Exhibition, OFC 2020 - San Diego, United States|
Duration: 8 Mar 2020 → 12 Mar 2020
|Name||2020 Optical Fiber Communications Conference and Exhibition, OFC 2020 - Proceedings|
|Conference||2020 Optical Fiber Communications Conference and Exhibition, OFC 2020|
|Period||8/03/20 → 12/03/20|
Bibliographical noteFunding Information:
Figure 4. (a1) Displacement-induced power loss and (a2) channel crosstalk under various horizontal displacements for single LG modes or designed mode combinations when LG modes with different l values but the same p value (LG10 and LG-10 modes) are utilized. (b1) Experimental bit error rate (BER) of the four mode combinations with OSNR when all the four mode combinations are transmitted. Measured constellations for LG10, LG11, LG-10, andGL-1mo1deswhenallthefoursingleLG modesaretransmitted.B2B:backtoback;FEC:forwarderrorcorrection. Acknowledgement: We acknowledge the generous support of National Science Foundation (NSF) (ECCS-1509965); Vannevar Bush Faculty Fellowship sponsored by the Basic Research Office of the Assistant Secretary of Defense (ASD) for Research and Engineering (R&E) and funded by the Office of Naval Research (ONR) (N00014-16-1-2813); Defense Security Cooperation Agency (DSCA-444064262).
© 2020 OSA.