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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 16, Iss. 4 — Apr. 1, 1998
  • pp: 542–

Signal-Induced Refractive Index Changes in Erbium-Doped Fiber Amplifiers

Mark Janos and Stephen C. Guy

Journal of Lightwave Technology, Vol. 16, Issue 4, pp. 542- (1998)


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Abstract

This paper reports the measurement and analysis of signal power-induced changes in the refractive index spectrum of an aluminosilicate erbium-doped fiber amplifier (EDFA). For a constant 980 nm pump power of 11 mW, a 1553 nm signal power of 4.6 mW caused a peak-to-trough change in refractive index of (3.8\;\pm\;0.4) \times 108 across the EDFA gain spectrum. A Kramers-Krnig transform of the signal-induced change in absorption coefficient agreed well with the measured change in refractive index. This result conflicts with the behavior of the system predicted by a homogeneously broadened two-level model and suggests limitations in the representation of the Er3+:glass system by a discrete set of homogeneously broadened transitions.

[IEEE ]

Citation
Mark Janos and Stephen C. Guy, "Signal-Induced Refractive Index Changes in Erbium-Doped Fiber Amplifiers," J. Lightwave Technol. 16, 542- (1998)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-16-4-542

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