Chinese Optics Letters, 2009, 7 (2): 02118, Published Online: Feb. 23, 2009
A 7-bit photonic true-time-delay system based on an 8\times8 MOEMS optical switch Download: 667次
微光机电系统(MOEMS)光开关 光真延时 相控阵天线 光延迟线 060.4510 Optical communications 060.1810 Buffers, couplers, routers,switches, and multiplexers
Abstract
We demonstrate a 7-bit photonic true-time-delay (TTD) system which uses an 8\times8 micro-optical-electro-mechanical system (MOEMS) optical switch for phased array antennas (PAAs) beamforming applications. The switch controls the optical signal to pass by the fiber delay lines (FDLs) of different lengths. Different time delays between adjacent channels are obtained due to the chromatic dispersion of FDLs. Therefore, the system cannot be disturbed by the environment. The measured time delay responses are nearly linear with the wavelength spacing between optical carriers as well as the lengths of FDLs, which agrees well with the theoretical analysis.
Ying Yang, Yi Dong, Dawei Liu, Hao He, Yaohui Jin, Weisheng Hu. A 7-bit photonic true-time-delay system based on an 8\times8 MOEMS optical switch[J]. Chinese Optics Letters, 2009, 7(2): 02118.