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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 7 — Apr. 1, 2014
  • pp: 1733–1736

Generation of a flexible optical comb in a periodically poled lithium niobate waveguide

Mirco Scaffardi, Sergio Pinna, Emma Lazzeri, and Antonella Bogoni  »View Author Affiliations

Optics Letters, Vol. 39, Issue 7, pp. 1733-1736 (2014)

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We propose and demonstrate a technique for the generation of an optical comb with tunable line spacing in a periodically poled lithium niobate (PPLN) waveguide. The technique is implemented with four input continuous waves (CWs), which generate a 19-line comb tuned to the spacing of 25 and 20 GHz. We show that each additional CW switched on out of the quasi phase-matching band at the PPLN waveguide input generates the growth of six new lines. The performance of the comb is tested modulating the lines with a 40Gb/s differential quadrature phase shift keying data, demonstrating error-free operation. Nonuniform spacing of the input seed CWs improves the efficiency of the line generation process.

© 2014 Optical Society of America

OCIS Codes
(230.4320) Optical devices : Nonlinear optical devices
(190.4223) Nonlinear optics : Nonlinear wave mixing

ToC Category:
Nonlinear Optics

Original Manuscript: November 29, 2013
Revised Manuscript: January 28, 2014
Manuscript Accepted: January 29, 2014
Published: March 19, 2014

Mirco Scaffardi, Sergio Pinna, Emma Lazzeri, and Antonella Bogoni, "Generation of a flexible optical comb in a periodically poled lithium niobate waveguide," Opt. Lett. 39, 1733-1736 (2014)

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