Optical Code Division Multiple Access (OCDMA) has bright future in communication because of its faster speed, efficiency, security and unlimited bandwidth. To reduce Multiple Access Interface (MAI) and Phase Induced Intensity Noise (PIIN) noises there are many codes in Spectral Amplitude Coding-Optical Code Division Multiple Access (SAC-OCDMA) with codes best property i.e., minimum cross-correl...

This paper proposes a novel code for optical division multiple access (OCDMA) systems, called the three-dimensional (3D) spectral/temporal/spatial single weight zero cross-correlation (3D-SWZCC) code. The proposed could potentially be used in next generation of passive networks (NG-PONs) to provide 3D-SWZCC-OCDMA-NG-PON system. developed has high capacity and property that completely suppresses...

This paper presents the comparative performance of different detection and coding schemes for spectral-amplitude-coded optical code division multiple access (SACOCDMA) system. SAC-OCDMA systems are receiving more attention because of their ability to completely eliminate multiple access interference (MAI). Fiber Bragg grating (FBGs) are used as encoder/decoder. Experimental simulation was carri...

Code division multiple access (CDMA) is a powerful multiplexing scheme which is very suited to the optical domain with its broad spectrum. Optical code division multiple access (OCDMA) technique allows multiple users to share the same transmission media by assigning different codes and is a very promising technique for the broadband communication. OCDMA networks can provide all customers with u...

In this paper, the performance of optical code division multiple access (OCDMA) system is studied using differential phase shift keying (DPSK) with balanced detection (BD) and optical thresholding. For the OCDMADPSK receiver, the performance parameters (i) bit error rate (BER), (ii) receiver sensitivity and (iii) spectral efficiency for asynchronous multiple access network are evaluated and com...

In this paper, we comprehensively analyze the impact of four wave mixing (FWM) on the performance of incoherent multi-wavelength optical code-division multiple-access (MW-OCDMA) systems. We also consider many other interferences and noises, including multiple access interference, optical beating interference, and receiver noise, in the analysis. From the numerical results, we can find the power...

OCDMA is a technique by which large number of users can access the network simultaneously i.e. at the same time. As the number of user increases, the dispersion and interference begin to rise, which led to high bit error rate and low quality of service of the system. Due to high bit error rate, the transmission of data becomes unsecure and error prone. Therefore to remove or minimize the disper...

The optical fiber is a very attractive communication medium since it offers a large bandwidth and low attenuation and can therefore facilitate demanding services such as high-quality video transmission. As the reach of optical fiber is being extended to the access network it is economically attractive to share fibers between different users without adding active components in the network. The m...

Data security at the physical layer of optical networks, or optical layer security, has received considerable research attention due to the rapid growth of optical network capacity [1]. Among various optical layer approaches, optical codedivision multiple access (OCDMA) systems are considered to be promising because of the physical encoding and decoding processes comprising these systems. Gener...

Optical code division multiple access (OCDMA) is one of the most upcoming technologies for future multiple access techniques along with WDMA and OTDMA. Optical CDMA offers greater scalability than other optical multiplexing technique and it provides flexible quality of service and data access security. OCDMA requires increasing demand for high speed, large capacity communications in optical net...