Point-to-multipoint distributions of 42 channel VSB-AM video signals using an erbium-doped fiber amplifier

Author

Huang, S.Y. ; Cline, T.W. ; Upadhyayula, L.C. ; Tench, R.E. ; Lipson, J. ; Simpson, J.R.

Author_Institution

AT&T Bell Lab., Solid State Technol. Center, Breinigsville, PA, USA

fYear

1990

fDate

23-25 July 1990

Firstpage

20

Lastpage

21

Abstract

It is demonstrated that an erbium-doped fiber amplifier (EDFA) can be successfully used as a power amplifier for point-to-multipoint distributions of 42-channel VSB-AM video signals. The amplifier has a 31.4-dB net small-signal gain and 6.1-dBm saturated power. When used as a power amplifier, the EDFA is heavily saturated with a 19.2-dB gain compression and 12.2-dBm output power. The total optical power budget is 20 dB at CNR of 50 dB. Both composite-triple-bit and composite-second-order distortions after the amplifier and splitter are about or above 60 dBc. The possibility of cascading these fiber amplifiers and branching their outputs makes them well suited for tree-and-branch-like CATV distribution systems.<>

Keywords

amplitude modulation; cable television; fibre lasers; optical links; optical modulation; video signals; 31.4 dB; 42 channel VSB-AM video signals; CATV distribution systems; EDFA; Er doped fibre amplifier; cascading; composite triple bit distortions; composite-second-order distortions; gain compression; optical power budget; output branching; output power; point-to-multipoint distributions; power amplifier; small-signal gain; Distributed amplifiers; Erbium-doped fiber amplifier; Optical amplifiers; Optical distortion; Optical fiber amplifiers; Optical saturation; Power amplifiers; Power generation; Stimulated emission; Video compression;

fLanguage

English

Publisher

ieee

Conference_Titel

Broadband Analog Optoelectronics: Devices and Systems, 1990. Conference Digest., LEOS Summer Topical on

Conference_Location

Monterey, CA, USA

Type

conf

DOI

10.1109/BAODS.1990.205496

Filename

205496