Title :
Design Optimization of Equiangular Spiral Photonic Crystal Fiber for Large Negative Flat Dispersion and High Birefringence
Author :
Islam, Md Asiful ; Alam, M. Shah
Author_Institution :
Dept. of Electr. & Electron. Eng., Bangladesh Univ. of Eng. & Technol., Dhaka, Bangladesh
Abstract :
The design of a residual dispersion compensating fiber in an equiangular spiral photonic crystal fiber (ES-PCF) structure is presented in the wavelength range 1350-1650 nm. A step-by-step design optimization is demonstrated and a maximum optimized value of average dispersion - 393 ps/nm km with a flattened dispersion profile with a very high birefringence is reported. It has been found that for the ES-PCF, a very high birefringence of 0.0278 at the wavelength 1550 nm can be obtained by employing an elliptical air hole as defect in the core region. An efficient full-vectorial finite-element method with vector edge element is employed in this study. The proposed ES-PCF can be an excellent candidate to be used in a wavelength-division-multiplexing optical fiber transmission system for residual chromatic dispersion compensation as well as maintaining single polarization.
Keywords :
birefringence; finite element analysis; holey fibres; optical fibre dispersion; photonic crystals; ES-PCF; core region; design optimization; elliptical air hole; equiangular spiral photonic crystal fiber; flattened dispersion profile; full vectorial finite element method; high birefringence; negative flat dispersion; residual chromatic dispersion compensation; residual dispersion compensating fiber; vector edge element; wavelength 1350 nm to 1650 nm; wavelength division multiplexing optical fiber transmission system; Finite element methods; Indexes; Optical fiber communication; Optical fiber dispersion; Optical fiber polarization; Birefringence; dispersion compensating fiber (DCF); polarization maintaining fiber; residual dispersion;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2012.2222349
