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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 17 — Sep. 1, 2006
  • pp: 2535–2537

Optical label switching of DRZ/DPSK orthogonal signal generated by photonic-crystal fiber

C. W. Chow, C. H. Kwok, H. K. Tsang, and Chinlon Lin  »View Author Affiliations


Optics Letters, Vol. 31, Issue 17, pp. 2535-2537 (2006)
http://dx.doi.org/10.1364/OL.31.002535


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Abstract

We demonstrate orthogonal label switching by using a dark-return-to-zero (DRZ) payload and differential phase-shift keying (DPSK) label generated by a dispersion-flattened photonic-crystal fiber. The high extinction ratio of both the payload and label improves the receiver margin. The DRZ payload introduces little cross talk to the DPSK label due to the RZ-like output of the demodulated DPSK. Simulations are performed to study the eye-closure penalty of the payload and label at different DRZ pulse widths. We compare the DRZ/DPSK with the RZ and DPSK signals numerically at the same data rate and show that the DRZ/DPSK has a strong tolerance to the polarization-mode dispersion. The DRZ/DPSK has a more compact spectrum suitable for the strong filtering requirements in WDM systems.

© 2006 Optical Society of America

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(060.7140) Fiber optics and optical communications : Ultrafast processes in fibers

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: April 3, 2006
Revised Manuscript: June 13, 2006
Manuscript Accepted: June 13, 2006
Published: August 9, 2006

Citation
C. W. Chow, C. H. Kwok, H. K. Tsang, and Chinlon Lin, "Optical label switching of DRZ/DPSK orthogonal signal generated by photonic-crystal fiber," Opt. Lett. 31, 2535-2537 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-17-2535


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References

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