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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 35 — Dec. 10, 2008
  • pp: 6477–6487

Dense wavelength-division multiplexing dispersion compensators based on chirped and apodized Fibonacci structures: CA- F C (j,n)

Saeed Golmohammadi, Mohammad Kazem Moravvej-Farshi, Ali Rostami, and Abbas Zarifkar  »View Author Affiliations


Applied Optics, Vol. 47, Issue 35, pp. 6477-6487 (2008)
http://dx.doi.org/10.1364/AO.47.006477


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Abstract

Chromatic dispersion compensation is an essential feature of high speed dense wavelength-division multiplexing (DWDM) systems. We propose a dispersion compensator structure whose characteristics meet the optical DWDM system requirements. The proposed structure is based on Fibonacci quasi-periodic multilayer structures composed of layers with large index differences. Studying the dispersive properties of Fibonacci structures with generation numbers j = 3 and 4, and calculating group delay (GD) and group velocity dispersion (GVD) of their reflection bands, we have demonstrated that to have a smooth GD and almost a constant GVD in each band of a DWDM system, one needs not only to suitably chirp the structure refractive index profile, but also must properly apodize it. We also demonstrate the possibility of achieving high slope GDs and large GVDs by means of high order Fibonacci structures with thicker layers. Finally, by varying the layer dimensions and refractive indices as well as Fibonacci’s order, one can design DWDM dispersion compensators suitable for distances as long as 220 km .

© 2008 Optical Society of America

OCIS Codes
(050.1590) Diffraction and gratings : Chirping
(060.4510) Fiber optics and optical communications : Optical communications
(220.1230) Optical design and fabrication : Apodization
(230.4170) Optical devices : Multilayers
(130.2035) Integrated optics : Dispersion compensation devices
(230.2035) Optical devices : Dispersion compensation devices

ToC Category:
Integrated Optics

History
Original Manuscript: July 3, 2008
Revised Manuscript: September 24, 2008
Manuscript Accepted: September 28, 2008
Published: November 28, 2008

Citation
Saeed Golmohammadi, Mohammad Kazem Moravvej-Farshi, Ali Rostami, and Abbas Zarifkar, "Dense wavelength-division multiplexing dispersion compensators based on chirped and apodized Fibonacci structures: CA-FC(j,n)," Appl. Opt. 47, 6477-6487 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-35-6477

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