Institute of Modern Optics, Key Laboratory of Optical Information Science & Technology, Ministry of Education of China, Nankai University, Tianjin 300071, China.
Opt Lett. 2013 Feb 15;38(4):588-90. doi: 10.1364/OL.38.000588.
We propose and experimentally demonstrate a new method for free-space optical (FSO) communication, where the transmitter encodes data into a composite computer-generated hologram and the receiver decodes through a retrieved array of sidelobe-modulated optical vortices (SMOVs). By employing the SMOV generation and detection technique, the usual stringent alignment and phase-matching requirement of the detection of optical vortices is released. In transmitting a gray-scale picture with 180×180 pixels, a bit error rate as low as 3.01×10(-3) has been achieved. Due to the orbital angular momentum multiplexing and spatial paralleling, this FSO communication method possesses the ability to greatly increase the capacity of data transmission.
我们提出并实验验证了一种新的自由空间光（FSO）通信方法，其中发射器将数据编码为复合计算机生成的全息图，接收器通过检索的旁瓣调制光学涡旋（SMOV）阵列进行解码。通过采用 SMOV 生成和检测技术，可以释放出检测光学涡旋通常需要的严格对准和相位匹配要求。在传输具有 180×180 像素的灰度图像时，已实现低至 3.01×10(-3)的误码率。由于轨道角动量复用和空间并行处理，这种 FSO 通信方法具有极大提高数据传输容量的能力。
