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A novel method with M-sequence code in optical code-division multiple-access (OCDMA) network, called pseudo-random number mapping/coding (PRNMC) algorithm, includes chaos equation, HCC/EHCC algorithm, two mapping methods. An approximately symmetric scheme is used to transmit and receive the secret key in private channel from encoder to decoder. By combining those algorithms appropriately, the security...
This paper presents a hybrid wavelength-division multiplexing (WDM) and optical code-division multiple-access (OCDMA) scheme over fiber to-the-home (FTTH) networks. In the proposed scheme, the total wavelength spectrum of the light source is divided into both of WDM group for identify section and OCDMA group for coded orthogonal section. In order to implement the shared arrayed-waveguide grating (AWG)...
This paper presents a wavelength division multiplexing/spectral amplitude coding system with optical code-division multiple-access, for applications using fiber vibration sensors. The device makes use of fiber Bragg grating (FBG) etching on optical fibers to provide encoding/decoding functionality. According to the orthogonal properties of spectral amplitude coding (SAC) using m-sequence code, the...
Exploiting the inherent cyclic and periodic free- spectral-range (FSR) properties of arrayed-waveguide grating (AWG) routers, the time-spreading and free-spectral-range (FSR) group hopping code, which is embedded by maximum length sequences (called TS/GH embedded M-sequence code) is configured over a fiber-to-the-home (FTTH) network. For constructing the proposed code, we use the same prime code for...
Exploiting the inherent cyclic and periodic free-spectral-range (FSR) properties of arrayed-waveguide-grating (AWG) routers, the time-spreading and free-spectral-range (FSR) group hopping code, which embedded maximum length sequence (i.e., called TS/GH embedded M-sequence code) is configured over fiber-to-the-home (FTTH) network. In this study, the proposed codeword, which integrated time and spectral...
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