Search

In this work, a two dimensional (2D) wavelength/time code is developed. The 64 bit 2D code is constructed by a technique based on folding of Golomb rulers referred in this work as modified Golomb code (2D MGC) and the proposed 2D code is generated using Java 8.1 software. The performance of the proposed 2D MGC is evaluated in terms of bit error rate (BER), received signal power, and time domain analysis of multiple users. In this experiment, it is found that the BER increases with multiple numbers of simultaneous users due to multiple access interference. The proposed 2D code yields better network performance in terms of BER compared to that of different existing 2D OCDMA codes. In this work, mathematical analysis is also carried out to prove that the proposed 64 bit code is optimal satisfying auto and cross correlation properties. Furthermore, the complexity analysis of the proposed 64 bit optical code division multiple access (OCDMA) code is analysed. The OCDMA model is validated using the optisystem software. [ABSTRACT FROM AUTHOR]

The transmission line consisting of non-zero dispersion shifted fibers (NZ–DSFs) and dispersion compensating fiber (DCF) modules has been proposed to enable the wide-band wavelength division multiplexing (WDM) transmission. The NZ–DSFs with the effective area over 60 μm2 and the dispersion of +5–11 ps/nm/km (1500–1600 nm) have been developed to suppress the transmission penalty caused by the four-wave mixing. The DCF modules which compensate for the dispersion and the dispersion slope simultaneously have also been realized. To enhance the figure of merit (FOM) of the DCF by enlarging the absolute value of its dispersion is found to be an effective way to reduce the non-linear effects occuring in the DCF. The transmission line actually fabricated based on the optimized design exhibits an extremely low dispersion deviation of ±0.08 ps/nm/km in the C band. [Copyright &y& Elsevier]