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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 24, Iss. 8 — Aug. 1, 2006
  • pp: 3121–

DS-OCDMA Encoder/Decoder Performance Analysis Using Optical Low-Coherence Reflectometry

Ihsan Fsaifes, Catherine Lepers, Anne-Francoise Obaton, and Philippe Gallion

Journal of Lightwave Technology, Vol. 24, Issue 8, pp. 3121- (2006)


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Abstract

Direct-sequence optical code-division multiple-access (DS-OCDMA) encoder/decoder based on sampled fiber Bragg gratings (S-FBGs) is characterized using phase-sensitive optical low-coherence reflectometry (OLCR). The OLCR technique allows localized measurements of FBG wavelength and physical length inside one S-FBG. This paper shows how the discrepancies between specifications and measurements of the different FBGs have some impact on spectral and temporal pulse responses of the OCDMA encoder/decoder. The FBG physical lengths lower than the specified ones are shown to affect the mean optical power reflected by the OCDMA encoder/decoder. The FBG wavelengths that are detuned from each other induce some modulations of S-FBG reflectivity resulting in encoder/decoder sensitivity to laser wavelength drift of the OCDMA system. Finally, highlighted by this OLCR study, some solutions to overcome limitations in performance with the S-FBG technology are suggested.

© 2006 IEEE

Citation
Ihsan Fsaifes, Catherine Lepers, Anne-Francoise Obaton, and Philippe Gallion, "DS-OCDMA Encoder/Decoder Performance Analysis Using Optical Low-Coherence Reflectometry," J. Lightwave Technol. 24, 3121- (2006)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-24-8-3121

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