Weather-insensitive Optical Free-space Communication Using the Gain-Saturated Optical Fiber Amplifier

이득 포화된 광섬유증폭기를 사용하는 기상에 둔감한 무선광통신

  • Shin, Kyung-Woon (Dept. of Electronic Engineering, Kwangwoon University) ;
  • Hurh, Yoon-Suk (Dept. of Electronic Engineering, Kwangwoon University) ;
  • Lee, Sang-Hoon (Dept. of Electronic Engineering, Kwangwoon University) ;
  • Lee, Jae-Seung (Dept. of Electronic Engineering, Kwangwoon University)
  • 신경운 (광운대학교 전자공학과) ;
  • 허윤석 (광운대학교 전자공학과) ;
  • 이상훈 (광운대학교 전자공학과) ;
  • 이재승 (광운대학교 전자공학과)
  • Published : 2006.10.25


We present a weather-insensitive optical free-space communication method supporting optical packet channels. It operates optical fiber amplifiers in gain-saturation regions. When the propagation loss gets too high, it decreases the average packet rate, or the average packet length, or both, to increase the optical power level launched into the free-space. As a demonstration, we transmit $8{\times}10$ Gigabit Ethernet channels over a terrestrial distance of 2.4 km. One gain-saturated free-space optical repeater is used at the halfway point.


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