Optical and Quantum Electronics

, Volume 21, Issue 2, pp 131–136 | Cite as

Application of back-action evading amplifier to optical network communications

  • Toshiyasu Himori
  • Osamu Hirota
  • Masao Nakagawa


This paper shows applications of the back-action evading amplifier, which amplifies a signal without degradation of the signal-to-noise ratio (SNR), to optical decoupling systems and clarifies the effects of the number of branches and the amplitude gain to SNR. As a result, it is shown that this concept provides an ideal optical system for networks with optical branches.


Communication Network Optical System Optical Network Optical Branch Amplitude Gain 
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Copyright information

© Controller, HMSO London 1989

Authors and Affiliations

  • Toshiyasu Himori
    • 1
  • Osamu Hirota
    • 2
  • Masao Nakagawa
    • 1
  1. 1.Department of Electrical Engineering, Faculty of Science and TechnologyKeio UniversityKanagawaJapan
  2. 2.Department of Information and Communication Engineering, Faculty of EngineeringTamagawa UniversityTokyoJapan

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