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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 13 — Jul. 1, 2013
  • pp: 2188–2190

Frequency chirp linearization for ultraflat optical frequency comb generation based on group velocity dispersion

Yanfei Xing, Qiang Wang, Li Huo, and Caiyun Lou  »View Author Affiliations


Optics Letters, Vol. 38, Issue 13, pp. 2188-2190 (2013)
http://dx.doi.org/10.1364/OL.38.002188


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Abstract

We propose to insert group velocity dispersion between cascaded phase and amplitude modulation for ultraflat optical frequency comb (OFC) generation. With the dispersion, the sinusoidally varied chirp of the continuous wave light induced by phase modulation becomes linear within a relatively wide time interval. This is useful to improve the flatness of the generated OFC by directly cascaded phase and amplitude modulation. Simulation shows a flat comb of 37 tones within 0.88 dB power variation when the modulation index of the phase modulation reaches 20. An ultraflat comb generator with 10 GHz frequency spacing is also demonstrated. The flatness of the 15 tones around the center wavelength has been improved to 0.98 dB.

© 2013 Optical Society of America

OCIS Codes
(230.4110) Optical devices : Modulators
(260.2030) Physical optics : Dispersion
(320.1590) Ultrafast optics : Chirping
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:
Physical Optics

History
Original Manuscript: March 18, 2013
Revised Manuscript: May 15, 2013
Manuscript Accepted: May 23, 2013
Published: June 18, 2013

Citation
Yanfei Xing, Qiang Wang, Li Huo, and Caiyun Lou, "Frequency chirp linearization for ultraflat optical frequency comb generation based on group velocity dispersion," Opt. Lett. 38, 2188-2190 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-13-2188

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