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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 8 — Apr. 12, 2010
  • pp: 7917–7922

Photonic crystal fiber based Mach-Zehnder interferometer for DPSK signal demodulation

Jiangbing Du, Yongheng Dai, Gordon K. P. Lei, Weijun Tong, and Chester Shu  »View Author Affiliations

Optics Express, Vol. 18, Issue 8, pp. 7917-7922 (2010)

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We demonstrate a novel fiber-based in-line DPSK demodulator using an in-fiber Mach-Zehnder interferometer (MZI). The device is fabricated by mismatch splicing of a photonic crystal fiber (PCF) with standard single mode fibers. The spectral characteristics at different PCF lengths are analyzed. The envelope of the interference fringes show a period that is inversely proportional to the PCF length, and is attributed to the periodic coupling between the core mode and the cladding mode. Error free demodulations of 10-Gb/s RZ- and NRZ-DPSK signals have been demonstrated using the in-fiber PCF-MZI demodulator with only 3-m PCF to introduce 91-ps delay. Wideband DPSK demodulation has also been achieved.

© 2010 OSA

OCIS Codes
(060.2400) Fiber optics and optical communications : Fiber properties
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: January 27, 2010
Revised Manuscript: March 5, 2010
Manuscript Accepted: March 6, 2010
Published: March 31, 2010

Jiangbing Du, Yongheng Dai, Gordon K. P. Lei, Weijun Tong, and Chester Shu, "Photonic crystal fiber based Mach-Zehnder interferometer for DPSK signal demodulation," Opt. Express 18, 7917-7922 (2010)

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