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Related Experiment Videos

Timing jitter eater for optical pulse trains.

Leaf A Jiang1, Matthew E Grein, Hermann A Haus

  • 1Research Laboratories of Electronics, Department of Electrical and Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. lejiang@mit.edu

Optics Letters
|March 27, 2003
PubMed
Summary
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Researchers reduced phase noise in 10 GHz pulse trains by 12 dB using a phase modulator and dispersive fiber. Prechirp fiber further enhanced this noise reduction for optical pulse generation.

Area of Science:

  • Optics and Photonics
  • Laser Physics
  • Ultrafast Science

Background:

  • High-repetition-rate optical pulse trains are crucial for applications like optical communications and spectroscopy.
  • Phase noise limits the performance and precision of these pulse trains.
  • Existing methods for phase noise reduction often involve complex setups or are limited in effectiveness.

Purpose of the Study:

  • To demonstrate a significant reduction in phase noise for a 10 GHz pulse train.
  • To investigate the effectiveness of a single phase modulator and dispersive fiber for phase noise suppression.
  • To evaluate the impact of prechirping on the phase noise reduction performance.

Main Methods:

  • Utilizing a single phase modulator to impart a phase shift onto the optical pulses.

Related Experiment Videos

  • Employing a dispersive fiber to manage the spectral characteristics and temporal profile of the pulses.
  • Incorporating a prechirp fiber stage before the main dispersive element to optimize performance.

    • Main Results:

    • Achieved a 12-dB reduction in phase noise for a train of 6.5-picosecond pulses.
    • Confirmed the effectiveness of the single phase modulator and dispersive fiber approach.
    • Demonstrated that introducing a prechirp fiber significantly improves the phase noise reduction.

    Conclusions:

    • A simple and effective method for reducing phase noise in high-repetition-rate optical pulse trains has been presented.
    • The demonstrated technique offers a practical solution for enhancing the quality of ultrashort pulses.
    • Prechirping is a valuable technique for optimizing phase noise suppression in dispersive systems.