@article{c0a6054a24be4c72a2f6c7aa8a5725d9,
title = "Composite second-order and composite triple-beat performance for cascaded fiber-optic catv transmitters",
abstract = "This paper explores experimentally the composite second-order (CSO) and composite triple-beat (CTB) parameters of the cascaded system of an externally modulated optical transmitter and a directly modulated optical transmitter. We show that the worst case and the best case for fiber-optic cable television cascaded systems are the “15 log{"} rule and the “2 log” rule for the cascaded CSO value and the “20 log” rule and the “2 log” rule for the cascaded CTB value, respectively. The 15 log and 20 log rules may be changed to the “ X log{"} rule (X < 15) for some specific frequencies or channels.",
author = "Lu, {Hai Han} and Lee, {Ching Ting}",
note = "Funding Information: Exte rnally modulate d optical transmitte rs with high optical power output have allowedcable television s CATV.headends totransmitradiofrequencys RF.signals a long distance w1x. These RF signals are transmitted by an e xternally modulate d transmitter to the first optical receive r, and the n retransmitte d through a directly modulate d transmitter to the second optical receiver. This cascaded syste m, an e xternally modulate d optical transmitter and dire ctly modulated optical transmit-ter, has permitted the RF signals to be transmitted over 50] 80 km. Afte r the second optical receive r has receive d the optical signals, it converts the optical signal to a RF signal. Thus a minimum number of RF amplifiers carry the RF signals to the service homes s fiber to the distribution point.. This cascaded system allows system ope rators to exte nd the ir service are as. While a CATV syste m operator would like to have long-distance transmission s over 100 km. capability, in re ality, the system design is limite d by the CATV RF parame ters required at the subscriber end, such as the carrier to noise ratio s CNR., the composite second order s CSO., the composite triple beat s CTB., and the cross-modulation distortion s XMOD.. For this paper, we experimentally studied the CSO and CTB performances and formulas for a cascade d system. We can modify the CSO and CTB cascaded parame ters and formulas within some range of fre que ncie s or for some range of channels. The expe rimental results may give CATV system designers an Received 1 October 1998; accepted 22 October 1998. The authors would like to thank the National Science Council of the Republic of China for the financial support of this work provided under Contract No. NSC88-2215-E008-003. Address correspondence to Professor Ching-Ting Lee, Institute of O ptical Sciences, National Central University, Chung-Li, Taiwan 32054, Republic of China. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",
year = "1999",
month = may,
doi = "10.1080/014680399244622",
language = "English",
volume = "18",
pages = "131--140",
journal = "Fiber and Integrated Optics",
issn = "0146-8030",
publisher = "Taylor and Francis Ltd.",
number = "3",
}