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Optical code-division multiple access using broad-band parametrically generated light
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DOI：10.1109/JLT.2004.827661.png)
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摘要
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A novel approach for an optical direct-sequence spread spectrum is presented. It is based on the complementary processes of broad-band parametric down-conversion and up-conversion. With parametric down-conversion, a narrow-band continuous-wave (CW) optical field is transformed into two CW broad-band white-noise fields that are complex conjugates of each other. These noise fields are exploited as the key and conjugate key in optical direct-sequence spread spectrum. The inverse process of parametric up-conversion is then used for multiplying the key by the conjugate key at the receiver in order to extract the transmitted data. A complete scheme for optical code-division multiple access (OCDMA) based on this approach is presented. The salient feature of the approach presented in this paper is that an ideal white-noise key is automatically generated, leading to high-capacity versatile code-division multiple-access configurations.
Keyword:
code-division multiple access (CDMA)
optical spread spectrum
parametric down-conversion
parametric up-conversion
期刊
IF:
4.8
论文数:
1.7W
被引数:
3.8W
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