Title :
2-Gbit/s signal amplification at lambda =1.53 mu m in an erbium-doped single-mode fiber amplifier
Author :
Giles, C.R. ; Desurvire, E. ; Talman, J.R. ; Simpson, J.R. ; Becker, P.C.
Author_Institution :
AT&T Bell Lab., Holmdel, NJ, USA
fDate :
4/1/1989 12:00:00 AM
Abstract :
The gain, saturation power, and noise of an erbium-doped single-mode traveling-wave fiber amplifier operating at a wavelength lambda =1.53 mu m are characterized. In continuous-wave (CW) measurements amplification at 2 Gbit/s was demonstrated with up to 17-dB gain for 1*10/sup -9/ bit error rate at 1.531 mu m and a 3-dB full bandwidth of 14 nm. From the determination of the fiber-amplifier´s output signal-to-noise ratio versus input signal power during data transmission, it was concluded that, with signal levels used here, signal-spontaneous beat noise limited the receiver sensitivity improvement. With the fiber amplifier acting as an optical preamplifier of the receiver, the best sensitivity was -30 dBm, obtained after installing a polarizer at the fiber amplifier output to reject half of the applied spontaneous emission power. This sensitivity was 6 dB better than without the fiber amplifier, proving that the fiber amplifier can be used as a preamplifier.<>
Keywords :
amplification; noise; optical fibres; preamplifiers; sensitivity; 1.531 micron; 17 dB; 2.0 Gbit/s; 3 dB; data transmission; noise; optical preamplifier; receiver sensitivity; saturation power; sensitivity; signal-spontaneous beat noise; signal-to-noise ratio; single-mode fiber amplifier; spontaneous emission power; Erbium-doped fiber amplifier; Gain measurement; Optical fiber amplifiers; Optical fiber polarization; Optical noise; Optical receivers; Power amplifiers; Preamplifiers; Semiconductor optical amplifiers; Signal to noise ratio;
Journal_Title :
Lightwave Technology, Journal of
