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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 22 — Oct. 29, 2007
  • pp: 14901–14906

Generation of two-mode optical signals with broadband frequency tunability and low spurious signal level

Ho-Jin Song, Naofumi Shimizu, and Tadao Nagatsuma  »View Author Affiliations


Optics Express, Vol. 15, Issue 22, pp. 14901-14906 (2007)
http://dx.doi.org/10.1364/OE.15.014901


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Abstract

For continuous millimeter and terahertz-wave applications, a two-mode optical signal generation technique that uses two arrayed waveguide gratings and two optical switch units is presented. In addition to easy and fast operation, this scheme offers broadband frequency tunability and high signal purity with a low spurious mode level. Mode spacing, which corresponds to the frequency of the generated MM/THz-wave signal after photomixing, was successfully swept in the range of 200 ∼ 550 GHz and the optical spurious mode suppression ratio higher than 25 dBc was achieved. In addition, spurious modes characteristics were investigated by using second harmonic generation (SHG) autocorrelation methods for several frequencies.

© 2007 Optical Society of America

OCIS Codes
(040.2840) Detectors : Heterodyne
(190.7070) Nonlinear optics : Two-wave mixing
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:
Nonlinear Optics

History
Original Manuscript: August 13, 2007
Revised Manuscript: September 24, 2007
Manuscript Accepted: September 25, 2007
Published: October 26, 2007

Citation
Ho-Jin Song, Naofumi Shimizu, and Tadao Nagatsuma, "Generation of two-mode optical signals with broadband frequency tunability and low spurious signal level," Opt. Express 15, 14901-14906 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-22-14901


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