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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Higher-capacity communication links based on two-mode phase-sensitive amplifiers.

C J McKinstrie1, N Alic, Z Tong

  • 1Bell Laboratories, Alcatel–Lucent, Holmdel, New Jersey 07733, USA. mckinstrie@alcatel-lucent.com

Optics Express
|July 1, 2011
PubMed
Summary
This summary is machine-generated.

Phase-sensitive parametric amplifiers offer lower noise figures and enhanced information capacity in optical communication links compared to traditional phase-insensitive amplifiers.

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Area of Science:

  • Optics and Photonics
  • Optical Communications

Background:

  • Optical communication links commonly utilize erbium-doped fiber amplifiers operating in a phase-insensitive (PI) manner.
  • Parametric fiber amplifiers, involving signal and idler waves, can also be employed for amplification.

Purpose of the Study:

  • To investigate the potential of parametric amplifiers in optical communication.
  • To explore methods for reducing noise figures and increasing information capacity.

Main Methods:

  • Comparing phase-insensitive (PI) parametric amplifiers with erbium-doped fiber amplifiers.
  • Analyzing the impact of transmitting correlated information in signal and idler waves for phase-sensitive (PS) operation.
  • Evaluating the information capacity of two-mode PS links versus PI links.

Main Results:

  • When used solely for signal amplification, parametric amplifiers exhibit PI behavior with noise figures comparable to erbium amplifiers.
  • Enabling phase-sensitive (PS) operation through correlated information transmission or signal copying significantly lowers parametric amplifier noise figures.
  • Two-mode PS links demonstrate a 2 b/s-Hz increase in information capacity over corresponding PI links.

Conclusions:

  • Phase-sensitive operation is key to unlocking the superior performance of parametric amplifiers.
  • Parametric amplifiers, when configured for PS operation, offer a significant advantage in optical communication link efficiency.