Sensitive Optical Receivers for Space

  • Magazine Article
  • TBMG-38503
Published February 01, 2021 by Tech Briefs Media Group in United States
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  • English

Communications in space demand the most sensitive receivers possible for maximum reach, while also requiring high-bit-rate operations. A concept for laser beam-based communications using an almost noiseless optical preamplifier in the receiver has been developed. The free-space optical transmission system relies on an optical amplifier that, in principle, does not add any excess noise, in contrast to all other pre-existing optical amplifiers referred to as phase-sensitive amplifiers (PSAs).