Title :
Dispersion-compensator incorporated optical fiber amplifier
Author :
Nakano, H. ; Sasaki, Seishi
Author_Institution :
Fiberoptics Div., Hitachi Ltd., Yokohama, Japan
fDate :
6/1/1995 12:00:00 AM
Abstract :
An optical fiber amplifier incorporating a dispersion compensator such as a dispersion compensating fiber (DCF) is proposed and examined theoretically and experimentally. The new amplifier requires only a single pump laser. In the experiment a 0.98-μm laser diode was used and the pump power was 50 mW. By utilizing remnant pump power, the amplifier can halve the loss effect of the compensator and double the apparent figure of merit of the DCF (ps/nm/dB). The noise figure of the new amplifier is not affected by inserting the DCP. A low-noise figure of 5 dB was obtained over a wide input-power range of -40 to -10 dBm.
Keywords :
erbium; fibre lasers; laser noise; optical fibre dispersion; optical fibre losses; optical pumping; 0.98 mum; 5 dB; 50 mW; dispersion compensating fiber; dispersion compensator; figure of merit; laser diode; loss effect; low-noise figure; noise figure; optical fiber amplifier; pump power; remnant pump power; single pump laser; wide input-power range; Diode lasers; Fiber lasers; Laser excitation; Laser noise; Laser theory; Optical amplifiers; Optical fiber amplifiers; Optical fiber dispersion; Power amplifiers; Pump lasers;
Journal_Title :
Photonics Technology Letters, IEEE
