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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 15 — Aug. 1, 2014
  • pp: 4294–4296

Stable radio-frequency phase distribution over optical fiber by phase-drift auto-cancellation

Wei Li, Wen Ting Wang, Wen Hui Sun, Wei Yu Wang, and Ning Hua Zhu  »View Author Affiliations


Optics Letters, Vol. 39, Issue 15, pp. 4294-4296 (2014)
http://dx.doi.org/10.1364/OL.39.004294


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Abstract

We report a new radio-frequency (RF) phase stabilization approach for long-haul optical fiber distribution. The phase drift of an RF signal induced by fiber-length variations can be canceled out automatically via RF mixing without using active phase discrimination and dynamic phase tracking. A key significance of our approach is that no assistant local oscillator (LO) signal is needed. Consequently, frequency estimation of the received RF signal, as well as frequency locking between the LO and the received RF signal, is no longer required, which simplifies the system. A proof-of-concept experiment shows that the phase drift of the received RF signal at 9.6 GHz is significantly reduced using the proposed method. The root mean square (RMS) timing jitter is 0.76 ps when a tunable optical delay line (TODL) inserted between the remote antenna unit (RAU) and local station is changed from 0 to 300 ps.

© 2014 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(350.5030) Other areas of optics : Phase
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: May 9, 2014
Revised Manuscript: June 9, 2014
Manuscript Accepted: June 11, 2014
Published: July 16, 2014

Citation
Wei Li, Wen Ting Wang, Wen Hui Sun, Wei Yu Wang, and Ning Hua Zhu, "Stable radio-frequency phase distribution over optical fiber by phase-drift auto-cancellation," Opt. Lett. 39, 4294-4296 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-15-4294

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