Simplified 2-bit photonic digital-to-analog conversion unit based on polarization multiplexing

被引：10
作者：
Zhang, Fangzheng [1 ]
Gao, Bindong [1 ]
Ge, Xiaozhong [1 ]
Pan, Shilong [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Key Lab Radar Imaging & Microwave Photon, Minist Educ, Yudao St 29, Nanjing 210016, Jiangsu, Peoples R China
来源：
OPTICAL ENGINEERING | 2016年 / 55卷 / 03期
关键词：
digital-to-analog conversion; polarization multiplexing; microwave photonics; CONVERTER;
D O I：
10.1117/1.OE.55.3.031115
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A 2-bit photonic digital-to-analog conversion unit is proposed and demonstrated based on polarization multiplexing. The proposed 2-bit digital-to-analog converter (DAC) unit is realized by optical intensity weighting and summing, and its complexity is greatly reduced compared with the traditional 2-bit photonic DACs. Performance of the proposed 2-bit DAC unit is experimentally investigated. The established 2-bit DAC unit achieves a good linear transfer function, and the effective number of bits is calculated to be 1.3. Based on the proposed 2-bit DAC unit, two DAC structures with higher (>2) bit resolutions are proposed and discussed, and the system complexity is expected to be reduced by half by using the proposed technique. (C) 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
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页数：4
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