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Optica Publishing Group
  • Conference on Optical Fiber Communication/International Conference on Integrated Optics and Optical Fiber Communication
  • 1993 OSA Technical Digest Series (Optica Publishing Group, 1993),
  • paper WG8
  • https://doi.org/10.1364/OFC.1993.WG8

Short-length Er3+-doped-fiber optical amplifier

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Abstract

An Er3+-doped-fiber amplifier (EDFA) that has many advantages, such as high gain, low noise figure, and low insertion loss, has been used in various lightwave-system experiments.1 In the majority of EDFA’s, Er3+-doped fibers (EDF’s) with a length of more than 10 m are used. Fiber lasers and compact-package optical amplifiers need short-length EDF’s. We fabricated a high-Er3+-concentration fiber and investigated its amplification by using short lengths. In this paper we report that a gain of 7.2 dB was obtained with only a 36-cm-long fiber. The pump source for the gain measurement was a 1.48-µm laser diode (LD). The signal light source was a 1.55-µm distributed-feedback LD (DFB-LD).

© 1993 Optical Society of America

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