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Applied Optics

Applied Optics


  • Vol. 42, Iss. 12 — Apr. 20, 2003
  • pp: 2181–2187

Improving the performance of fiber gratings with sinusoidal chirps

Lin Zhang and Changxi Yang  »View Author Affiliations

Applied Optics, Vol. 42, Issue 12, pp. 2181-2187 (2003)

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Sinusoidal chirps are introduced in fiber gratings to improve their performance as dispersion compensators and multichannel filters. The sinusoidally chirped fiber gratings exhibit a flattop spectrum with steep edges and high reflectivity. The bandwidth utilization defined as the ratio of -1:-30-dB bandwidth could be very high (>0.85). This structure can be applied to the sampled fiber gratings to enhance channel uniformity. We demonstrate 264 uniform channels with a 25-GHz-spacing for high-density-wavelength multiplexing applications. Multichannel dispersion compensations with seven uniform channels of 50-GHz-spacing in short fiber gratings are also demonstrated. The impact of possible fabrication errors on the spectra of the gratings is discussed.

© 2003 Optical Society of America

OCIS Codes
(050.1590) Diffraction and gratings : Chirping
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2340) Fiber optics and optical communications : Fiber optics components
(230.1480) Optical devices : Bragg reflectors
(230.1950) Optical devices : Diffraction gratings

Original Manuscript: July 9, 2002
Revised Manuscript: December 2, 2002
Published: April 20, 2003

Lin Zhang and Changxi Yang, "Improving the performance of fiber gratings with sinusoidal chirps," Appl. Opt. 42, 2181-2187 (2003)

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