An Optical Code Division Multiple Access (OCDMA) Passive Optical Network (PON) is a highly promising PON configuration, thanks to the potential of OCDMA technology in eliminating channel contention and efficiently supporting multi-rate traffic with different QoS requirements. In this paper, we provide a mathematical framework for a call-level performance analysis of an OCDMA PON that accommodat...

Optical code division multiple access system (OCDMA) exploits the advantages of CDMA and Optical communication. It has been gaining importance with increasing demands of high speed and large capacity for communication in optical networks. OCDMA encoding/decoding process provides a high level of security which is directly implemented in the physical layer. In OCDMA, type of coding technique play...

This paper scrutinizes visible light communication (VLC) employing hybrid optical time division multiplexing (OTDM) wavelength (WDM). It also demonstrates the simulation of VLC using direct sequence code multiple access (DS-OCDMA) system developed by OptiSystem-Matlab Co-simulation. The profits WDM and OTDM capacities have been combined two levels freedom to build up system. performances are de...

We analyze the beat noise cancellation in two-dimensional optical code-division multiple-access (2-D OCDMA) systems using an optical hard-limiter (OHL) array. The Gaussian shape of optical pulse is assumed and the impact of pulse propagation is considered. We also take into account the receiver noise and multiple access interference (MAI) in the analysis. The numerical results show that, when O...

-A new code for Spectral Amplitude Coding Optical Code Division Multiple Access (SAC-OCDMA) is proposed and is called Flexible Cross-correlation (FCC) code. The FCC code possesses various advantages; including easy code construction using Tridiagonal matrix compared to other SAC-OCDMA codes such as MDW, MQC and MFH, shorter code length and the important properties of this code is the flexible c...

We designed, built, and demonstrated a novel OCDMA multi code transmitter and receiver capable of a Gigabit operation, runs error free with a capability of a bit-to-bit code swapping using fast wavelength-hopping time-spreading OCDMA codes. BER less than 10 was measured and no error floor was observed. By implementing optical layer XOR, our novel transmitter/receiver pair enables One-time Pad d...

Evaluation of error probability based on the assumption that the gains of APDs used in upper and lower branches of optical code-division multiple-access (OCDMA) systems are matched provides an approximation which may in practice be an overestimate or underestimate of the actual probability of error. In this paper, we analyze the impact of APD mismatch in a synchronous OCDMA system based on the ...

Abstrak – The effect of dispersion of fiber on the performance of OCDMA system and to find the limitations imposed by dispersion on number of user and length of transmission. It has been observed that in the bit error rate performance curve the error is decreased when the number of subscriber is increased side by side the optical power is reduced when the users is added. This paper has presente...

In this paper, we show and analyze, for the first time, the static performance of integrated multi-stage cascade and tree spectral amplitude OCDMA en/decoders (E/Ds) which are fabricated in the low loss Si3N4–SiO2 material system. Combined with incoherent broad spectral sources these E/Ds enable cost-effective node deployment in an OCDMA passive optical network architecture. We discuss the desi...