Optical retrodirective tracking system approach using an array of phase conjugators for communication and power transmission.
Optical retrodirective tracking system approach using an array of phase conjugators for communication and power transmission.
复制标题
使用相位共轭器阵列进行通信和电力传输的光学逆向跟踪系统方法。
DOI：
10.1364/ao.46.004633
复制
发表时间：
2007
期刊：
影响因子：
1.9
通讯作者：
N. Kaya
中科院分区：
文献类型：
--
作者：
C. Schäfer;O. Matoba;N. Kaya
提出了一种适用于通信和电力传输的反向跟踪系统的新概念。在提出的概念中，电力发射机利用接收机的导频信号，通过在非线性介质中共轭信号的相位来获得有关其方向的信息。因此，功率通过相位共轭信号波束传输回接收机。功率可以通过相位共轭器阵列来集中，相位共轭器阵列提供了一个大孔径，因此与单个元件相比，接收器光伏板上的强度可以增加。在四波混频过程中，控制读出光束的相位和方向可以控制干涉图样、位置和大小。对相位和光斑大小的控制进行了数值分析，并对两个共掺杂的Sr(x)Ba(1-x)Nb(2)O(6) （Co:SBN）晶体进行了测量，证实了在两束情况下实现的干涉的发生。
A new concept for a retrodirective tracking system applicable for communication and power transmission is proposed. In the proposed concept, the power transmitter utilizes a receiver's pilot signal to obtain information about its direction by conjugating the signal's phase inside a nonlinear medium. Power is therefore transmitted back to the receiver by the phase-conjugated signal beam. The power can be concentrated by an array of phase conjugators, which provides a large aperture so that the intensity can be increased on the receiver's photovoltaic panels compared to a single element. Controlling the phase and the direction of the readout beams in the four-wave-mixing process provides control over the interference pattern, its position, and its size. A numerical analysis is given for the phase and spot size control, and measurements with two Co-doped Sr(x)Ba(1-x)Nb(2)O(6) (Co:SBN) crystals confirm the occurrence of interference that is achieved for the case of two beams.