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Optical Amplifiers

Optical Amplifiers

Created: Jan 17, 2022 14:38:54Latest reply: Jan 17, 2022 14:48:45 179 2 0 0 0
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Why do we prefer EDFA or Raman Amplifiers ? What are advantages and distadvantages of both of them ?

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liqiang185
Admin Created Jan 17, 2022 14:48:45

Hi there！

The gain of the Raman amplifier is less than that of the EDFA. Generally, the gain of the Raman amplifier is only 3 dB to 15 dB. In addition, the optical fiber of several kilometers or more than 10 kilometers is required as the pump fiber. However, the EDFA can amplify optical signals at a time of at least 16 dB. The only advantage of using a Raman amplifier is that noise in the optical signal is not increased.

More details: What is the difference between EDFA amplifier and Raman amplifier.

Thank you!


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olive.zhao
olive.zhao Admin Created Jan 17, 2022 14:41:52

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liqiang185
liqiang185 Admin Created Jan 17, 2022 14:48:45

Hi there！

The gain of the Raman amplifier is less than that of the EDFA. Generally, the gain of the Raman amplifier is only 3 dB to 15 dB. In addition, the optical fiber of several kilometers or more than 10 kilometers is required as the pump fiber. However, the EDFA can amplify optical signals at a time of at least 16 dB. The only advantage of using a Raman amplifier is that noise in the optical signal is not increased.

More details: What is the difference between EDFA amplifier and Raman amplifier.

Thank you!


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  • convention：
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