Wide field-of-view(FOV)free-space receivers are promising for optical wireless communications,which can reduce the requirements on aiming and tracking.However,the FOV is limited by some tradeoffs of the receiver’s components employing conventional optical devices.In this paper,we proposed a wide FOV optical receiver based on the extraordinary optical transmission mechanism of surface plasmons on a dielectricmetal interface.The proposed receiver has a flat response over a relative wide range of incidence angles.Moreover,the received optical energy density has been enhanced greatly compared to the incidence.Related mechanisms as well as the optimization method are investigated.Potential applications are also discussed. Wide field-of-view (FOV) free-space receivers are promising for optical wireless communications, which can reduce the requirements on aiming and tracking. Ultimately, the FOV is limited by some tradeoffs of the receiver’s systems employing conventional optical devices. This paper, we proposed a wide FOV optical receiver based on the extraordinary optical transmission mechanism of surface plasmons on a dielectric metal interface. proposed proposed receiver has a flat response over a relative wide range of incidence angles. Moreover, the received optical energy density has been enhanced greatly compared to the incidence. Related mechanisms as well as the optimization method are investigated. Potential applications are also discussed.