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Optimum position of isolators within erbium-doped fibers

1992; Institute of Electrical and Electronics Engineers; Volume: 4; Issue: 6 Linguagem: Inglês

10.1109/68.141970

1941-0174

Ole Lumholt, K. Schüsler, A. Bjarklev, S. Dahl-Petersen, J.H. Povlsen, T. Rasmussen, Karsten Rottwitt,

Advanced Fiber Optic Sensors

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. >