title: Orbital-angular-momentum-multiplexed free-space optical communication link using transmitter lenses.
abstract: In this paper, we explore the potential benefits and limitations of using transmitter lenses in an orbital-angular-momentum (OAM)-multiplexed free-space optical (FSO) communication link. Both simulation and experimental results indicate that within certain transmission distances, using lenses at the transmitter to focus OAM beams could reduce power loss in OAM-based FSO links and that this improvement might be more significant for higher-order OAM beams. Moreover, the use of transmitter lenses could enhance system tolerance to angular error between transmitter and receiver, but they might degrade tolerance to lateral displacement.
authors.forename: Long
authors.initials: L
authors.lastname: Li
authors.forename: Guodong
authors.initials: G
authors.lastname: Xie
authors.forename: Yongxiong
authors.initials: Y
authors.lastname: Ren
authors.forename: Nisar
authors.initials: N
authors.lastname: Ahmed
authors.forename: Hao
authors.initials: H
authors.lastname: Huang
authors.forename: Zhe
authors.initials: Z
authors.lastname: Zhao
authors.forename: Peicheng
authors.initials: P
authors.lastname: Liao
authors.forename: Martin P J
authors.initials: MP
authors.lastname: Lavery
authors.forename: Yan
authors.initials: Y
authors.lastname: Yan
authors.forename: ChangJing
authors.initials: C
authors.lastname: Bao
authors.forename: Zhe
authors.initials: Z
authors.lastname: Wang
authors.forename: Asher J
authors.initials: AJ
authors.lastname: Willner
authors.forename: Nima
authors.initials: N
authors.lastname: Ashrafi
authors.forename: Solyman
authors.initials: S
authors.lastname: Ashrafi
authors.forename: Moshe
authors.initials: M
authors.lastname: Tur
authors.forename: Alan E
authors.initials: AE
authors.lastname: Willner