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

Rui Wu ; Victor Torres Company (Institutionen för mikroteknologi och nanovetenskap, Fotonik) ; D.E. Leaird ; A.M. Weiner
Optics Express (1094-4087). Vol. 21 (2013), 5, p. 6045-6052.
[Artikel, refereegranskad vetenskaplig]

The generation of high-repetition-rate optical frequency combs with an ultra-broad, coherent and smooth spectrum is important for many applications in optical communications, radio-frequency photonics and optical arbitrary waveform generation. Usually, nonlinear broadening techniques of comb-based sources do not provide the required flatness over the whole available bandwidth. Here we present a 10-GHz ultra-broadband flat-topped optical frequency comb (> 3.64-THz or 28 nm bandwidth with ∼365 spectral lines within 3.5-dB power variation) covering the entire Cband. The key enabling point is the development of a pre-shaping-free directly generated Gaussian comb-based 10-GHz pulse train to seed a highly nonlinear fiber with normal dispersion profile. The combination of the temporal characteristics of the seed pulses with the nonlinear device allows the pulses to enter into the optical wave-breaking regime, thus achieving a smooth flat-topped comb spectral envelope. To further illustrate the high spectral coherence of the comb, we demonstrate high-quality pedestal-free short pulse compression to the transform-limited duration. © 2013 Optical Society of America\e.

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Denna post skapades 2014-01-14. Senast ändrad 2015-07-28.
CPL Pubid: 192450


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Institutionen för mikroteknologi och nanovetenskap, Fotonik


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