Analog video distribution system with three cascaded 980 nm single-pumped EDFA´s and 73 dB power budget

Author

Bülow, H. ; Fritschi, R. ; Heidemann, R. ; Junginger, B. ; Krimmel, H.G. ; Otterbach, J.

Author_Institution

Alcatel SEL Res. Centre, Stuttgart, Germany

Volume

4

Issue

11

fYear

1992

Firstpage

1287

Lastpage

1289

Abstract

A FTTH (fiber to the home)-system for 35 AM-VSB (amplitude modulation vestigial sideband) PAL TV-signals is presented with three cascaded EDFAs (erbium-doped fiber amplifiers) single-pumped with commercially available 980 nm semiconductor laser diodes, with only one optical isolator per amplifier and without any optical filter. This EDFA design leads to an optical distribution system that is cost competitive as compared to coax solutions. The high-optical output power (+13 dBm) in conjunction with the low noise performance (max NF=4.5 dB) allows a 73-dB power budget for a weighted video signal to noise ratio of 45 dB. A high split count of 4*32*64*64=524288 subscribers is realized.<>

Keywords

amplitude modulation; cable television; erbium; fibre lasers; optical links; subscriber loops; video signals; 980 nm; AM-VSB; EDFA; Er doped fibre amplifier; FTTH system; PAL TV-signals; amplitude modulation vestigial sideband; analog video distribution; cascaded single pumped EDFAs; fiber to the home; high split count; high-optical output power; low noise performance; optical distribution system; optical isolator; phase alternating line; power budget; semiconductor laser diodes; subscribers; weighted video signal to noise ratio; Amplitude modulation; Diode lasers; Erbium-doped fiber amplifier; Optical fiber subscriber loops; Optical filters; Optical modulation; Optical noise; Semiconductor optical amplifiers; Signal to noise ratio; Stimulated emission;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.166971

Filename

166971