Special Section on Microwave Photonics: Deep Interactions between Microwaves and Lightwaves

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

[+] Author Affiliations
Fangzheng Zhang, Bindong Gao, Xiaozhong Ge, Shilong Pan

Nanjing University of Aeronautics and Astronautics, Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, Yudao Street No. 29, Nanjing 210016, China

Opt. Eng. 55(3), 031115 (Oct 28, 2015). doi:10.1117/1.OE.55.3.031115
History: Received July 25, 2015; Accepted September 25, 2015
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Abstract.  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.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Fangzheng Zhang ; Bindong Gao ; Xiaozhong Ge and Shilong Pan
"Simplified 2-bit photonic digital-to-analog conversion unit based on polarization multiplexing", Opt. Eng. 55(3), 031115 (Oct 28, 2015). ; http://dx.doi.org/10.1117/1.OE.55.3.031115


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