3 GHz analog optical fiber transmission system applied in ultra-fast diagnosis

LIU Fu-hua; AN Yu-ying; WANG Ping; SHAO Bi-bo; FENG Guo-bin

doi:10.3969/j.issn.1001-3806.2011.05.006

A broad-bandwidth analog optical fiber transmission system was developed for ultra-fast pulse signal transmission under the circumstance with complicated electromagnetic field. The ultra-fast pulse electric signal was converted to optical signal by means of electro-optic conversion. After several kilometers distance transmission, the optical signal was recovered by means of photo-electric conversion. The experimental measurement results of the system indicate that its bandwidth is (0.0003~3)GHz, in-band flatness is 1dB, linear dynamic range is 40dB(100 multiples), output peak-to-peak noise is less than 5mV, input standing-wave-ratio is less than 2. It's applied in high power microwave experiments. The results show that the 3GHz analog optical fiber transmission system which employs electro-optic and photo-electric conversion technology is suitable for ultra-fast pulse signals transmission in radiation field diagnosis.

3 GHz analog optical fiber transmission system applied in ultra-fast diagnosis

1. Technology Physics Institute, Xidian University, Xi'an 710071, China;

2. State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi'an 710024, China

Received Date: 2010-11-25

Accepted Date: 2011-01-03

Available Online: 2011-09-25

Abstract: A broad-bandwidth analog optical fiber transmission system was developed for ultra-fast pulse signal transmission under the circumstance with complicated electromagnetic field. The ultra-fast pulse electric signal was converted to optical signal by means of electro-optic conversion. After several kilometers distance transmission, the optical signal was recovered by means of photo-electric conversion. The experimental measurement results of the system indicate that its bandwidth is (0.0003~3)GHz, in-band flatness is 1dB, linear dynamic range is 40dB(100 multiples), output peak-to-peak noise is less than 5mV, input standing-wave-ratio is less than 2. It's applied in high power microwave experiments. The results show that the 3GHz analog optical fiber transmission system which employs electro-optic and photo-electric conversion technology is suitable for ultra-fast pulse signals transmission in radiation field diagnosis.

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3 GHz analog optical fiber transmission system applied in ultra-fast diagnosis

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