Abstract
This article reveals a best possible design for hybrid dispersion compensating fiber with high birefringence established on modified broadband compensating structure through S, C and L telecommunication bands. The simulation outcome exhibits relatively higher birefringence of 3.76 × 10−2 at wavelength of 1550 nm. The suggested fiber also has dispersion compensation characteristics in an inclusive series of wavelengths which covers 1400–1625 nm. The reported design can achieve dispersion quantity of − 606 ps/(nm·km) at 1550 nm effective wavelength. The reported fiber design matches the relative dispersion slope 0.003694 nm−1 similar to single-mode fiber at 1550 nm operating wavelength. This fiber demonstrates negatively flattened effective dispersion of − 2.703 ± 0.734 ps/(nm·km) within 180 nm flat band ranging from 1460 to 1640 nm wavelength. It is also convenient to optical high bit rate communication systems. The low confinement loss is found 3.756 × 10−10 dB/m at the operating wavelength. This design also achieves highly nonlinear coefficient of 50.34 W−1 km−1. In some cases, it can also be used in sensing applications.
Highlights
Optical fiber waveguides are very suitable for fast data transmission in communication systems
We offer a hybrid dispersion compensating PCF (HyDCF) that is very satisfactory for compensating the dispersion of single mode fiber over the S, C and L communication bands
The numerical calculations like chromatic dispersion, birefringence, effective area, confinement loss, total residual dispersion, residual dispersion slope and V parameter are accomplished by MatLab software with the assistance of equations related to each term stated above
Summary
Optical fiber waveguides are very suitable for fast data transmission in communication systems. Kaijage et al [13] proposed a modified octagonal PCF structure attaining the dispersion coefficient and birefringence – 239.5 ps/(nm.km) and 1.67×10-2 respectively at 1550 nm operating wavelength This modified PCF contains elliptical air holes near the centre core which has complexity in fabrication but has low confinement loss in the order of 10-5. As the proposed design shows the single mode property from 1450-1700 nm wavelength and so on, it may be very beneficial for high bit stream rate fast transmission over the long distance of an optical fiber communication channel As it exhibits the dual property, the suggested fiber is a best nominee for both sensing & telecommunication applications effectively. This fiber demonstrates confinement loss in order of 10-9 which is comparatively lower than some hybrid dispersion compensating PCF structures
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