Optical Analog CATV System Conveying 100 Channels in a 1.5 GHZ sub Carrier Using the AM-VSB Format<br />DOI: 10.14209/jcis.1995.7
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Abstract
Optical analog CATV systems using the AM-VSB format are introduced. By using a subcarrier, in the 1-2 GHz range, the CATV spectrum is upconverted to a low microwave region. This shifted spectrum AM modulates a semiconductor laser. The resulting optical signal is then introduced in an optical fiber. At the reception end occurs the detection and the down conversion. Advantages and critical points of this arrangement are discussed. A commercial laser diode is rigorously modeled and used for several system simulation situations. The role played by the microwave amplifier that drives the laser is discussed. It is shown that, over a single fiber, it is possible to reach the 100 channel capacity, in an economic way, while preserving the desired performance.
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Podcameni, A., Cristina Ribeiro Carvalho, M., Fernando M. Conrado, L., & M. Mosso, M. (2015). Optical Analog CATV System Conveying 100 Channels in a 1.5 GHZ sub Carrier Using the AM-VSB Format<br />DOI: 10.14209/jcis.1995.7. Journal of Communication and Information Systems, 10(1). Retrieved from https://jcis.sbrt.org.br/jcis/article/view/184
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