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Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
06:16

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Published on: April 25, 2019

Encoding and decoding of femtosecond pulses.

A M Weiner1, J P Heritage, J A Salehi

  • 1Bell Communications Research, 331 Newman Springs Road, Red Bank, New Jersey 07701-7020, USA.

Optics Letters
|September 12, 2009
PubMed
Summary
This summary is machine-generated.

Researchers converted ultrashort optical pulses into pseudonoise bursts using spectral phase encoding. This technique could enable new code-division multiple-access optical telecommunication networks.

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Area of Science:

  • Optics and Photonics
  • Telecommunications Engineering

Background:

  • Ultrashort optical pulses are crucial for high-speed data transmission.
  • Current optical telecommunication networks face limitations in bandwidth and reconfigurability.

Purpose of the Study:

  • To demonstrate a novel method for encoding and decoding ultrashort optical pulses.
  • To explore the potential of frequency-domain encoding for optical telecommunications.

Main Methods:

  • Encoding pseudorandom binary phase codes onto the optical frequency spectrum of femtosecond pulses.
  • Spreading femtosecond pulses into picosecond-duration pseudonoise bursts.
  • Decoding spectral phases to restore the original pulse shape.

Main Results:

  • Successful spreading of femtosecond optical pulses into picosecond pseudonoise bursts.
  • Demonstration of pulse restoration through spectral phase decoding.
  • Validation of the frequency-domain encoding and decoding technique.

Conclusions:

  • Frequency-domain encoding and decoding of coherent ultrashort pulses is feasible.
  • This technique offers a potential basis for rapidly reconfigurable optical telecommunication networks.
  • The proposed method could advance code-division multiple-access (CDMA) optical networks.