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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 5 — Mar. 1, 2012
  • pp: 806–808

Postcompensation for nonlinearity of Mach–Zehnder modulator in radio-over-fiber system based on second-order optical sideband processing

Guoqiang Zhang, Xiaoping Zheng, Shangyuan Li, Hanyi Zhang, and Bingkun Zhou  »View Author Affiliations


Optics Letters, Vol. 37, Issue 5, pp. 806-808 (2012)
http://dx.doi.org/10.1364/OL.37.000806


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Abstract

A postcompensation technique for nonlinearity of a Mach–Zehnder modulator in a radio-over-fiber (ROF) system is proposed and experimentally demonstrated based on second-order optical sideband processing and optical carrier band attenuation. The phase of the second-order optical sideband is shifted to suppress the third-order intermodulation distortion (IMD3) in a direct detection ROF link. The optical carrier band is attenuated to make two kinds of origins of IMD3 have equal intensity and cancel each other out. A spurious-free dynamic range of 124.8dB·Hz2/3 is achieved, which is about 25 dB more than that without compensation.

© 2012 Optical Society of America

OCIS Codes
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(060.5625) Fiber optics and optical communications : Radio frequency photonics
(130.4110) Integrated optics : Modulators

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: November 1, 2011
Revised Manuscript: January 5, 2012
Manuscript Accepted: January 6, 2012
Published: February 21, 2012

Citation
Guoqiang Zhang, Xiaoping Zheng, Shangyuan Li, Hanyi Zhang, and Bingkun Zhou, "Postcompensation for nonlinearity of Mach–Zehnder modulator in radio-over-fiber system based on second-order optical sideband processing," Opt. Lett. 37, 806-808 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-5-806


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