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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 36, Iss. 14 — Jul. 15, 2011
  • pp: 2749–2751

Improvement of flatness of optical frequency comb based on nonlinear effect of intensity modulator

Yujie Dou, Hongming Zhang, and Minyu Yao  »View Author Affiliations

Optics Letters, Vol. 36, Issue 14, pp. 2749-2751 (2011)

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Optical frequency comb (OFC) generated using cascaded intensity and phase modulators was experimentally demonstrated. Very flat OFC can be achieved by cascading intensity and phase modulators driven directly by sinusoidal waveform, where chirped fiber Bragg grating or specially tailored radio frequency waveforms are not required. It is found that the spectral flatness of OFC is related to direct current (DC) bias of intensity modulator and the optimum ratio of DC bias to half-wave voltage is 0.35. In the experiment, 15 comb lines within 1 dB spectral power variation are obtained at 10 GHz microwave frequency. The experimental results agree well with the simulation.

© 2011 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.5060) Fiber optics and optical communications : Phase modulation
(230.2090) Optical devices : Electro-optical devices
(320.5540) Ultrafast optics : Pulse shaping
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: May 11, 2011
Revised Manuscript: June 6, 2011
Manuscript Accepted: June 20, 2011
Published: July 14, 2011

Yujie Dou, Hongming Zhang, and Minyu Yao, "Improvement of flatness of optical frequency comb based on nonlinear effect of intensity modulator," Opt. Lett. 36, 2749-2751 (2011)

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