4 November 2010 Design of infrared images high speed transmission technology based on fiber
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Abstract
Due to the development of IR FPAs resolution and the transmission speed of the images, the requirement for the high speed IR images transmission becomes a significant part in the whole IR imaging system. The fiber based transmission method is proved to be a promising technique which can replace the traditional methods based on the electrical signals. This paper introduces the design of digital IR images transmission technique based on fiber, according to the characteristics of IR imaging data. This long wire transmission is accomplished utilizing the FPGA which is designed to control the data cushion synthesis process, receive the high speed imaging data and send out the real time VGA images. FPGA provides the reference clock signals to help the encoder convert the 16 bits parallel imaging data into the serial LVDS signals. Then the MAX9376 chip is introduced to convert the LVDS signals into the LVPECL signals, for only the LVPECL signals can be received by the laser diode. The receiving process is just opposite, where the LVPECL signals are finally converted into the parallel data. To verify this design, the VGA controller function is achieved by Verilog HDL programming in FPGA, so that the parallel IR imaging data can be converted into the high resolution images. The experiment images show that the effective resolution of the image in 64Mhz is 1024×800, and the transmission rate reaches 1.125Gb/s which is much higher than the traditional methods and fully satisfies the requirement for the long distance IR imaging data transmission.
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Xing Yang, Xing Yang, Debin Pan, Debin Pan, Pu Hong, Pu Hong, Chensheng Wang, Chensheng Wang, } "Design of infrared images high speed transmission technology based on fiber", Proc. SPIE 7854, Infrared, Millimeter Wave, and Terahertz Technologies, 78541L (4 November 2010); doi: 10.1117/12.869526; https://doi.org/10.1117/12.869526
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