Imaging Components, Systems, and Processing

Efficient and low-latency pixel data transmission module for adaptive optics wavefront processor based on field-programmable gate array

[+] Author Affiliations
Haifeng Yang

Chinese Academy of Sciences, Institute of Optics and Electronics, Box 350, Shuangliu, Chengdu, Sichuan 610209, China

Chinese Academy of Sciences, Key Laboratory on Adaptive Optics, Chengdu 610209, China

University of Chinese Academy of Sciences, Beijing 100049, China

Yunxia Xia

Chinese Academy of Sciences, Institute of Optics and Electronics, Box 350, Shuangliu, Chengdu, Sichuan 610209, China

Chinese Academy of Sciences, Key Laboratory of Beam Control, Chengdu 610209, China

Haotian Zhang, Mei Li, Changhui Rao

Chinese Academy of Sciences, Institute of Optics and Electronics, Box 350, Shuangliu, Chengdu, Sichuan 610209, China

Chinese Academy of Sciences, Key Laboratory on Adaptive Optics, Chengdu 610209, China

Opt. Eng. 54(6), 063106 (Jun 23, 2015). doi:10.1117/1.OE.54.6.063106
History: Received August 16, 2014; Accepted May 14, 2015
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Abstract.  An efficient and low-latency pixel data transmission module for the adaptive optics wavefront processor is presented. A fiber-based custom real-time pixel data transfer protocol is developed, which has the characteristics of long transmission distance, low-latency, and low-protocol overhead. The hardware part of the suite has been verified on different circuit boards with different field-programmable gate arrays. Obtained results demonstrate that the transmission and protocol processing delay are only 413.5 ns, the transmission bandwidth is 3.125 Gbps, and the error rate is less than 1012. Under the same conditions of 156.25 MHz clock frequencies and length of transmission line, compared with the serial front panel data port protocol adopted by the thirty meter telescope and the european southern observatory, the transmission delay is significantly reduced by 2.82 times and has a remarkably low logic occupancy rate through our solution. Also, the method has been applied in several actual projects.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Haifeng Yang ; Yunxia Xia ; Haotian Zhang ; Mei Li and Changhui Rao
"Efficient and low-latency pixel data transmission module for adaptive optics wavefront processor based on field-programmable gate array", Opt. Eng. 54(6), 063106 (Jun 23, 2015). ; http://dx.doi.org/10.1117/1.OE.54.6.063106


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