Raman crosstalk suppression in CATV overlay passive optical network

In cable television (CATV) overlay passive optical networks (PONs), where a CATV signal copropagates with a downstream baseband signal, the crosstalk components mediated by stimulated Raman scattering (SRS) limit the performance of low-number CATV channels. In this letter, we propose and demonstrate a way of reducing the SRS-induced crosstalk in CATV overlay PONs. The proposed scheme utilizes a high-speed polarization scrambler in the transmitter to make the SRS-induced crosstalk independent of polarization evolution along the fiber and a subtractor module to compensate for the crosstalk. Our demonstration shows that crosstalk can be reduced by 9 dB.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2007-05
Language
ENG
Keywords

SYSTEMS

Citation

IEEE PHOTONICS TECHNOLOGY LETTERS, v.19, pp.695 - 697

ISSN
1041-1135
DOI
10.1109/LPT.2007.895055
URI
http://hdl.handle.net/10203/1251
Appears in Collection
EE-Journal Papers(저널논문)
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