Noise characteristics of Er3+-doped fiber amplifierspumped by 0.98 and 1.48 μm laser diodes |
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| Authors: | Hamada M. Shimizu M. Okayasu M. Takeshita T. Horiguchi M. Tachikawa Y. Sugita E. |
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| Affiliation: | NTT Opto-Electron. Lab., Ibaraki; |
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| Abstract: | Measured noise characteristics of Er3+-doped optical fiber amplifiers pumped by 0.98- and 1.48-μm laser diodes (LDs) are reported. The noise figures estimated from the beat noise between signal and spontaneous emission are 3.2 dB for pumping by 0.98-μm LD and 4.1 dB for pumping by 1.48-μm LD. The beat noise between spontaneous emission components and the spontaneous shot noise for the 0.98-μm pumping are lower than those for the 1.48-μm pumping |
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