14.4-dB Gain of Erbium-Doped Fiber Amplifier Pumped by 1.49-µm Laser Diode

Suyama, M.; Nakamura, Kentaro; Kashiwa, S.; Kuwahara, H.

doi:10.1364/ofc.1989.pd6

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“…The EDFA seems more suitable for multigigabit long-span DD systems than the semiconductor laser amplifier (SLA) in the 1.5-pm wavelength region for the following reasons:Low noise characteristics [171 0 Low fiber coupling loss 0 Polarization independent gain 118,191 0 Simple and efficient pumping by laser diodes[20,21] 0 Little waveform distortion due to…”

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confidence: 99%

Optical amplification and modulation techniques for multigigabit IM/DD long-haul transmission systems

Minami

Nishimoto

Suyama

et al. 1990

IEEE International Conference on Communications, Including Supercomm Technical Sessions

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Optical amplification will play an important role in multigigabit IM/DD long-haul optical transmission systems. Modulation techniques for these systems will need to be designed for maximum tolerance to fiber dispersion.This paper compares the tolerance to fiber chromatic dispersion of several representative modulation techniques and discusses the impact of these modulation techniques on the performance of longhaul systems using optical amplifier repeaters. A 12-Gb/s transmission experiment using an Er-doped fiber amplifier is also described.

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confidence: 99%