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Erbium-doped multi-element fiber amplifiers for space-division multiplexing operations.
S Jain1, T C May-Smith, A Dhar
1Optoelectronics Research Centre, University of Southampton, Highfield, Southampton SO17 1BJ, UK.
Optics Letters
|March 5, 2013
Summary
New erbium-doped multi-element fiber (MEF) amplifiers can amplify multiple signals simultaneously. These novel fiber amplifiers demonstrate high gain and no crosstalk, enabling efficient multi-channel amplification.
Area of Science:
- Optoelectronics
- Fiber optics
- Telecommunications
Background:
- Erbium-doped fiber amplifiers are crucial for optical communications.
- Simultaneous amplification of multiple channels is a key challenge.
- Multi-element fibers offer a potential solution for integrated amplification.
Purpose of the Study:
- To fabricate and characterize erbium-doped multi-element fiber (MEF) amplifiers.
- To assess the feasibility of simultaneous multi-channel amplification.
- To evaluate the gain and noise performance of individual fiber elements within MEFs.
Main Methods:
- Fabrication of 3-element and 7-element MEFs.
- Characterization of individual element gain and noise figure.
- Crosstalk testing between different element pairs within MEFs.
Main Results:
- Each element achieved approximately 32 dB gain.
- Noise figure was less than 5 dB for an input signal of -23 dBm at 1530 nm.
- No crosstalk was detected between elements, confirming isolation.
Conclusions:
- MEFs are capable of simultaneous multi-channel amplification.
- The fabricated MEFs exhibit high gain and low noise performance.
- MEF technology offers a promising solution for integrated optical amplification.
