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Chinese Optics Letters

Chinese Optics Letters


  • Vol. 7, Iss. 3 — Mar. 1, 2009
  • pp: 188–190

Carrier suppression in quadruple frequency modulation by cascaded optical external modulators for millimeter-wave generation

Wei Zhang, Xue Feng, Wei Zhang, and Xiaoming Liu  »View Author Affiliations

Chinese Optics Letters, Vol. 7, Issue 3, pp. 188-190 (2009)

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The optical carrier suppression in optical quadruple frequency modulation by cascaded external modulators is investigated theoretically and experimentally. Theoretical analysis demonstrates that the optical carrier suppression ratio is related with not only the initial phase difference of electrical signals applied on the two modulators, but also the optical phase shift between the two modulators. The maximum suppression ratio can be achieved when the total phase difference is equal to n\pi+\pi/2 (n=1,2,...), which is verified by experiments. By properly controlling the total phase shift, 40-GHz millimeter-wave is generated by using a 10-GHz radio frequency (RF) source and the modulators.

© 2009 Chinese Optics Letters

OCIS Codes
(060.4080) Fiber optics and optical communications : Modulation
(350.3950) Other areas of optics : Micro-optics

Wei Zhang, Xue Feng, Wei Zhang, and Xiaoming Liu, "Carrier suppression in quadruple frequency modulation by cascaded optical external modulators for millimeter-wave generation," Chin. Opt. Lett. 7, 188-190 (2009)

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