Title :
Optimum position of isolators within erbium-doped fibers
Author :
Lumholt, Ole ; Schüsler, Kim ; Bjarklev, Anders ; Dahl-Petersen, Svend ; Povlsen, Jørn H. ; Rasmussen, Thomas ; Rottwitt, Karsten
Author_Institution :
Electromagn. Inst., Tech. Univ. of Denmark, Lyngby, Denmark
fDate :
6/1/1992 12:00:00 AM
Abstract :
An isolator is used as an amplified spontaneous emission suppressing component within an erbium-doped fiber. The optimum isolator placement is both experimentally and theoretically determined and found to be slightly dependent upon pump power. Improvements of 4 dB in gain and 2 dB in noise figure are measured for the optimum isolator location at 25% of the fiber length when the fiber is pumped with 60 mW of pump power at 1.48 mu m.<>
Keywords :
erbium; fibre lasers; optical communication equipment; optical isolators; optical pumping; superradiance; 1.48 micron; 60 mW; Er-doped fibre; IR; amplified spontaneous emission suppressing component; fibre amplifiers; gain; noise figure; optical isolator; optimum isolator location; optimum isolator placement; pump power; Design optimization; Erbium; Gain; Insertion loss; Isolators; Noise figure; Optical fiber couplers; Optical fiber theory; Power measurement; Spontaneous emission;
Journal_Title :
Photonics Technology Letters, IEEE
