Photonic receiving and linearization of RF signals with improved spurious free dynamic range

被引：3
|
作者：
Zhu, Xiang [1 ]
Jin, Tao [1 ]
Chi, Hao [1 ]
Tong, Guochuan [1 ]
Lai, Tianhao [1 ]
Li, Dong [1 ]
机构：
[1] Zhejiang Univ, Coll Informat Sci & Elect Engn, 38 Zheda Rd, Hangzhou 310027, Zhejiang, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2018年 / 423卷
基金：
中国国家自然科学基金;
关键词：
Microwave photonics; Intermodulation distortion; Intensity modulation; Analog optical signal processing; BROAD-BAND LINEARIZATION; OPTICAL LINKS; DISTORTION; DOWNCONVERSION; MODULATION;
D O I：
10.1016/j.optcom.2018.03.072
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A linearization scheme for receiving broadband radio frequency (RF) is theoretically analyzed and experimentally demonstrated. The system uses three intensity modulators (IMs) to impose a two-tone RF signal on an optical carrier. We demonstrate that the linearization technique can be used to suppress the third-order intermodulation distortion (IMD3) and the five-order inter-modulation distortion (IMD5) components simultaneously. An improvement of the spurious free dynamic range (SFDR) as large as 112.13 dB in 1-Hz bandwidth is achieved, which is 13.5 dB higher than the SFDR of a conventional intensity-modulated scheme.
引用
收藏
页码：17 / 20
页数：4
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