Google Play icon

Low Error-Rate Detector System for Telecommunications

Posted December 4, 2014

NIST scientists have devised an experimental photon-detection system for communications with error rates far below even the most ideal conventional designs.

Telecom networks need to move trillions of bits per second in the form of light pulses sent over fiber-optic lines, with information encoded in increasingly complex states of the pulses. Ensuring transmission fidelity in those conditions will demand ever-lower detector error rates. But even state-of-the-art receivers are approaching their design sensitivity limits.

The system developed in PML’s Quantum Optics Group and reported in Nature Photonics combines two major innovations: adaptive measuring, which successively samples the incoming signal in comparison an adjustable reference beam which is optimized with each sample; and photon-number-resolving detectors, which allow more accurate noise reduction and state discrimination.

The system’s error probability for pulses of about 20 photons is 25 times lower than even the best possible conventional receivers, with better performance likely as photon numbers increase. In practical use, it could lead to lower energy consumption, longer network links without signal-boosters, and higher-capacity links.

Source: NIST

Featured news from related categories:

Technology Org App
Google Play icon
84,082 science & technology articles

Most Popular Articles

  1. Efficiency of solar panels could be improved without changing them at all (September 2, 2019)
  2. Diesel is saved? Volkswagen found a way to reduce NOx emissions by 80% (September 3, 2019)
  3. The famous old Titanic is disappearing into time - a new expedition observed the corrosion (September 2, 2019)
  4. The Time Is Now for Precision Patient Monitoring (July 3, 2019)
  5. Europe and US are Going to Try and Deflect an Asteroid (September 6, 2019)

Follow us

Facebook   Twitter   Pinterest   Tumblr   RSS   Newsletter via Email