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Related Experiment Video

Updated: May 13, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Supercontinuum-based 10-GHz flat-topped optical frequency comb generation.

Rui Wu¹, Victor Torres-Company, Daniel E Leaird

¹School of Electrical and Computer Engineering, Purdue University, 465 Northwestern Avenue, West Lafayette, Indiana 47907, USA.

|March 14, 2013

Summary

This summary is machine-generated.

Researchers developed a novel 10-GHz optical frequency comb with an ultra-broad, flat spectrum covering the C-band. This breakthrough enables enhanced performance in optical communications and arbitrary waveform generation.

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In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

Published on: May 27, 2013

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Last Updated: May 13, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

Published on: May 27, 2013

Area of Science:

Photonics and Optical Engineering
Nonlinear Optics
Spectroscopy

Background:

High-repetition-rate optical frequency combs are crucial for advanced applications.
Existing nonlinear broadening techniques often lack spectral flatness across the desired bandwidth.

Purpose of the Study:

To generate an ultra-broadband, flat-topped optical frequency comb with high repetition rate.
To overcome limitations of current spectral broadening methods for comb generation.

Main Methods:

Directly generated Gaussian pulse train (10 GHz) as a seed source.
Utilized a highly nonlinear fiber with a normal dispersion profile.
Achieved the optical wave-breaking regime for spectral shaping.

Main Results:

Demonstrated a 10-GHz ultra-broadband flat-topped optical frequency comb (> 3.64-THz or 28 nm bandwidth).
Achieved ~365 spectral lines within a 3.5-dB power variation, covering the entire C-band.
Showcased high spectral coherence through pedestal-free short pulse compression.

Conclusions:

The developed method enables generation of ultra-broadband flat-topped optical frequency combs.
This technique offers significant improvements for optical communications and arbitrary waveform generation.
The high spectral coherence ensures high-quality pulse characteristics.