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Cladding pumped bismuth-doped fiber amplifiers operating in O-, E-, and S-telecom bands
Optics Letters
|March 22, 2023
Summary
Novel bismuth-doped fiber amplifiers (BDFAs) for O-, E-, and S-telecom bands were demonstrated using low-cost cladding pumping. These amplifiers offer high gain and low noise, advancing fiber optic telecommunications.
Area of Science:
- Optical Engineering
- Telecommunications Technology
- Materials Science
Background:
- Bismuth-doped fibers (BDFs) are crucial for developing advanced optical amplifiers.
- Existing fiber optic systems require upgrades for enhanced multiband data transmission.
Purpose of the Study:
- To demonstrate novel bismuth-doped fiber amplifiers (BDFAs) for O-, E-, and S-telecom bands.
- To utilize a cladding pumping scheme with low-cost semiconductor laser diodes.
Main Methods:
- Development of BDFAs using a cladding pumping scheme.
- Utilizing multimode semiconductor laser diodes (0.7-0.8 µm) as pump sources.
- Characterization of amplifier performance, including gain and noise figure.
Main Results:
- Achieved high peak gain (>25-30 dB) across O-, E-, and S-telecom bands.
- Demonstrated a relatively low noise figure (5-6 dB).
- Cladding-pumped BDFAs show comparable performance to core-pumped counterparts.
Conclusions:
- This research presents the first demonstration of cladding-pumped BDFAs for O-, E-, and S-bands.
- The developed BDFAs offer a cost-effective solution for practical applications in fiber optics.
- Bismuth-doped fibers are key components for future high-performance optical amplifiers.
