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On the Validity of the Effective Index Method for Long Period Grating Photonic Crystal Fibers

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DOI: 10.4236/msa.2012.35046    4,510 Downloads   8,393 Views   Citations

ABSTRACT

This paper focuses on the investigation of modal characteristics and sensing properties of long period grating photonic crystal fibers (LPG-PCFs). An improved effective index method is employed with an objective to study its limitations for various designs of LPG-PCFs. Results so obtained with the above method are compared with the corresponding values of multiple multipole (MMP) method results which points the range of validity and applicability of the improved effective index method to LPG-PCFs. It is shown that this method is excellent when the surrounding media is assumed to be air. However, it becomes less accurate when the fiber is immersed into a liquid with a refractive index close to that of the cladding.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

D. Khadri, W. Belhadj, D. Gamra, F. AbdelMalek and H. Bouchriha, "On the Validity of the Effective Index Method for Long Period Grating Photonic Crystal Fibers," Materials Sciences and Applications, Vol. 3 No. 5, 2012, pp. 310-316. doi: 10.4236/msa.2012.35046.

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