Mutual deterioration of WDM-coupled AM-CATV and digital B-ISDN services in single fiber access networks

Author

Muys, W. ; van der Plaats, J.C. ; Willems, F.W. ; van Heijningen, P.H.

Author_Institution

AT&T Network Syst. Nederland B.V., Huizen, Netherlands

Volume

5

Issue

7

fYear

1993

fDate

7/1/1993 12:00:00 AM

Firstpage

832

Lastpage

834

Abstract

In single-fiber access networks with interactive and distributive services multiplexed at different wavelengths, the interactive signal may disturb the distributive signal, and vice versa, because of imperfect isolation of the demultiplexing WDM at the subscriber site. The mutual deterioration of a 622-Mb/s intensity-modulated (IM) broadband ISDN (B-ISDN) signal at 1.3 mu m and an AM subcarrier-multiplexed (SCM) TV-distribution signal at 1.55 mu m is investigated. Both theory and experiment show that the isolation of the demultiplexing WDM must keep the undesirable 1.3- mu m, 622-Mb/s IM signal power on the analog receiver below -36 dBm to avoid degradation of the analog system CNR of 47 dB by more than 1 dB.<>

Keywords

B-ISDN; amplitude modulation; cable television; optical links; optical modulation; subscriber loops; wavelength division multiplexing; 1.3 micron; 1.55 micron; 622 Mbit/s; AM-CATV; IM signal power; IR; TV-distribution signal; WDM-coupled; analog receiver; analog system CNR; broadband ISDN; carrier-to-noise ratio; demultiplexing; digital B-ISDN services; distributive services; distributive signal; imperfect isolation; intensity-modulated; interactive services; interactive signal; multiplexed; mutual deterioration; single fiber access networks; subcarrier-multiplexed; subscriber site; B-ISDN; Degradation; Demultiplexing; Optical fibers; Optical modulation; Optical noise; Optical receivers; Optical sensors; PIN photodiodes; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.229822

Filename

229822