We demonstrate binary spectral phase coded waveform discrimination at 10 GHz for narrow band optical code-division multiple-access (NB-OCDMA) via direct electrical detection without using any optical hard-limiter. Only 9 phase-locked, 10 GHz spaced, spectral lines within a 100 GHz spectral window are used for the phase coding. Considerably high contrast ratio of 5 between signal and multiuser a...

In this paper, the sum capacity of the OCDMA/OCDMA (O/O) signature sequence set is investigated when the users of the two orthogonal sets are allowed to have a different average-input-energy constraint and with perfect synchronization of the users. It is found that the sum capacity is dependent on the load and the respective SNR only, but independent of the choice of the orthogonal sets. For a ...

A complete complementary/prime/shifted prime (CPS) code family for the optical code-division multiple-access (OCDMA) system is proposed. Based on the ability of complete complementary (CC) code, the multiple-access interference (MAI) can be suppressed and eliminated via spectral amplitude coding (SAC) OCDMA system under asynchronous/synchronous transmission. By utilizing the shifted prime (SP) ...

multiple access (OCDMA), modified quadratic congruence (MQC). Abstract— In this article we aim to investigate the theoretical and simulation analysis of the next-generation optical access network based on optical code division multiple access (OCDMA) technique. Hence, incorporating this technique with passive optical network (PON) will enable the system to support higher bandwidth compared to t...

In order to implement flexibility as well as survivable capacities over passive optical network (PON), a new automatic random fault-recovery mechanism with array-waveguide-grating based (AWG-based) optical switch (OSW) is presented. Firstly, wavelength-division-multiplexing and optical code-division multiple-access (WDM/OCDMA) scheme are configured to meet the various geographical locations req...

In order to implement flexibility as well as survivable capacities over passive optical network (PON), a new automatic random fault-recovery mechanism with array-waveguide-grating based (AWG-based) optical switch (OSW) is presented. Firstly, wavelength-division-multiplexing and optical code-division multiple-access (WDM/OCDMA) scheme are configured to meet the various geographical locations req...

This paper proposes a theoretical study to characterize the transmission of optical code division multiple access (CDMA) systems deploying polarization shift keying (PolSK) over a free space optical (FSO) link under the impact of atmospheric turbulence. In our analysis, a novel transceiver architecture for atmospheric OCDMA FSO systems based on polarization modulation with direct detection is p...

We presented review on current advancement in WDM-PON technologies to standarized economical system implementation, and also discuss cost-effective solutions and potential areas of application. Key-Words: WDM-PON, OFDM, OCDMA, RSOA.

A Dynamic Optical Code Division Multiple. Access (DOCDMA) communication system for Two Dimensional (2-D) Perfect Difference codes using Shifted Sine Functions (SSFs) is proposed here. The performance analysis for this OCDMA system has been done. This system is modeled and analyzed taking into account Multiple Access Interference (MAI) or Multiuser interference (MUI), Thermal Noise and Phase Ind...

Optical Code Division Multiple Access (OCDMA) is an optical processing system which allows multiple users to share the same bandwidth simultaneously without interfering with each other using unique optical codes. As the number of user increases, the dispersion and multiple access interference begin to rise, which led to high bit error rate and low quality of service of the system. This paper pr...