Title :
A highly efficient two-stage Er/sup 3+/-doped optical fiber amplifier employing an optical gate to effectively reduce ASE
Author :
Takara, Hidehiko ; Takada, Atushi ; Saruwatari, Masatoshi
Author_Institution :
NTT Transmission Syst. Lab., Kanagawa, Japan
fDate :
3/1/1992 12:00:00 AM
Abstract :
Highly efficient amplification of ultrashort optical pulses is demonstrated with a two-stage Er/sup 3+/-doped optical fiber amplifier that includes an optical gate to efficiently reduce amplified spontaneous emission (ASE) generated from the first Er/sup 3+/-doped fiber. A gain of 49 dB, an amplified peak power 0f 105 W, and 1.05 nJ pulse energy are achieved for 2-Mb/s, 10-ps pulses at a total pumping power of 90 mW from 1.48- mu m LDs.<>
Keywords :
erbium; fibre lasers; optical pumping; random noise; superradiance; 1.05 nJ; 1.48 micron; 10 ps; 105 W; 2 Mbit/s; 49 dB; 90 mW; ASE reduction; IR laser diodes; amplified peak power; amplified spontaneous emission; efficient amplification; laser pumping; optical gate; pulse energy; two-stage Er/sup 3+/-doped optical fiber amplifier; ultrashort optical pulses; Erbium; Gain; Optical fiber amplifiers; Optical fibers; Optical pulse generation; Optical pulses; Optical pumping; Pulse amplifiers; Spontaneous emission; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
