Relative dispersion slope matched dispersion compensating highly birefringent spiral microstructure optical fibers using defected core

A highly birefringent dispersion compensating microstructure optical fiber (MOF) based on a modified spiral (MS)-MOF is presented that successfully compensates the dispersion covering the E- to L-communication bands ranging from 1370 to 1640 nm. It is shown theoretically that it can obtain a negative dispersion coefficient of about $−221$ to $−424ps/(nm·km)$) over S to L bands and $−327ps/(nm·km)$) at the operating wavelength of 1550 nm. The relative dispersion slope is perfectly matched to that of single-mode fiber of about $0.0036nm−1$. Besides, the proposed MS-MOF offers high birefringence of $1.79×10−2$ with a large nonlinear coefficient of about $41.8W−1km−1$ at the operating wavelength along with two zero dispersion wavelengths at 610 and 1220 nm. Futhermore, the variation of structural parameters is also studied to evaluate the tolerance of the fabrication.