TY - JOUR
T1 - Coherent multimode OAM superpositions for multidimensional modulation
AU - Anguita, Jaime A.
AU - Herreros, Joaquin
AU - Djordjevic, Ivan B.
PY - 2014/4
Y1 - 2014/4
N2 - The generation, propagation, and detection of high-quality and coherently superimposed optical vortices, carrying two or more orbital angular momentum (OAM) states, is experimentally demonstrated using an optical arrangement based on spatial light modulators. We compare our results with numerical simulations and show that, in the context of turbulence-free wireless optical communication (indoor or satellite), individual OAM state identification at the receiver of an OAM-modulated system can be achieved with good precision, to accommodate for high-dimensional OAM modulation architectures. We apply our results to the simulation of a communication system using low-density parity-check-coded modulation that considers optimal signal constellation design in a channel that includes OAM crosstalk induced by realistic (imperfect) detection.
AB - The generation, propagation, and detection of high-quality and coherently superimposed optical vortices, carrying two or more orbital angular momentum (OAM) states, is experimentally demonstrated using an optical arrangement based on spatial light modulators. We compare our results with numerical simulations and show that, in the context of turbulence-free wireless optical communication (indoor or satellite), individual OAM state identification at the receiver of an OAM-modulated system can be achieved with good precision, to accommodate for high-dimensional OAM modulation architectures. We apply our results to the simulation of a communication system using low-density parity-check-coded modulation that considers optimal signal constellation design in a channel that includes OAM crosstalk induced by realistic (imperfect) detection.
KW - Orbital angular momentum
KW - data-center communications
KW - free-space optical communications
KW - optical modulation
KW - optical vortices
KW - satellite communications
UR - http://www.scopus.com/inward/record.url?scp=84897894480&partnerID=8YFLogxK
U2 - 10.1109/JPHOT.2014.2309645
DO - 10.1109/JPHOT.2014.2309645
M3 - Article
AN - SCOPUS:84897894480
SN - 1943-0655
VL - 6
JO - IEEE Photonics Journal
JF - IEEE Photonics Journal
IS - 2
M1 - 6755504
ER -