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Nondispersive wavelength-division sampling.

A S Bhushan1, F Coppinger, S Yegnanarayanan

  • 1Optoelectronic Circuits and Systems Laboratory, Department of Electrical Engineering, University of California, Los Angeles, California 90095-1594, USA.

Optics Letters
|December 13, 2007
PubMed
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We developed a novel wavelength-division-sampling method for high-speed signal analysis. This technique uses multiwavelength pulses to achieve a 100-Gsample/s sampling rate, enabling precise measurements.

Area of Science:

  • Optoelectronics
  • Signal Processing
  • Photonics

Background:

  • High temporal resolution is crucial for modern signal processing.
  • Existing sampling techniques face limitations in speed and accuracy.
  • Supercontinuum sources offer broad spectral content for advanced applications.

Purpose of the Study:

  • To introduce and validate a new wavelength-division-sampling technique.
  • To achieve high sampling rates for analog signal analysis.
  • To demonstrate the feasibility of the proposed method experimentally.

Main Methods:

  • Generation of multiwavelength near-transform-limited pulses using discrete-time true-time delay.
  • Sampling of analog signals within an electro-optic modulator.
  • Demultiplexing of sampled pulses using a wavelength-division-multiplexing filter.

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Main Results:

  • Successful demonstration of a novel wavelength-division-sampling technique.
  • Achieved a high temporal resolution sampling rate of 100 Giga-samples per second.
  • Validated the effectiveness of the discrete-time true-time delay and WDM filter approach.

Conclusions:

  • The proposed wavelength-division-sampling technique offers a viable solution for high-speed analog signal acquisition.
  • This method provides high temporal resolution, crucial for advanced signal processing.
  • The experimental results confirm the potential of this technique for future applications.