Transmission line with distributed erbium-doped fiber amplifier

• Published in: Journal of lightwave technology Vol. 19; no. 12; pp. 1887 - 1891
• Main Authors: Kawakami, H., Kataoka, T., Miyamoto, Y., Hagimoto, K., Toba, H.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.12.2001; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Amplification; Amplifiers; Applied sciences; Circuit properties; Degradation; Electric, optical and optoelectronic circuits; Electronics; Erbium-doped fiber amplifier; Exact sciences and technology; Feasibility; Fiber nonlinear optics; Fibers; Flattening; Gain; Integrated optics. Optical fibers and wave guides; Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits; Noise measurement; Optical and optoelectronic circuits; Optical pumping; Optical solitons; Power transmission lines; Pumps; Stimulated emission; Transmission line theory; Transmission lines; Noise figure; Distributed parameter circuit; Transmission line; Optical transmission; L band; Fiber amplifier; Non linear effect; Amplified spontaneous emission; Optical fiber; Signal to noise ratio
• ISSN: 0733-8724; 1558-2213
• DOI: 10.1109/50.971681

We show the advantages of distributed erbium-doped fiber amplifiers (EDFAs) over lumped EDFAs. Using the distributed EDFA for 50%-100% of the transmission line lessens the signal degradation compared to the conventional transmission line. We also show the feasibility of the gain-flattened d-EDFA transmission line. An experiment shows that the gain peak is shifted and flattened at low pump powers.