Shaokun Liu, Le He, Xiaoke Yin, Yingbo Chu, Nengli Dai, Jinyan Li. Research on High Absorption Germanosilicate Bi-Doped Fiber and Its Gain Performance[J]. Chinese Journal of Lasers, 2024, 51(2): 0206005
- Chinese Journal of Lasers
- Vol. 51, Issue 2, 0206005 (2024)
Fig. 1. Characteristics of preform and optical fibers. (a) Refractivity profile of preform with cross-sectional image of fiber shown in inset; (b) absorption spectra
Fig. 2. Structural diagram of UL test system
Fig. 3. Relationship between absorption at 1310 nm and input power
Fig. 4. Structural diagram of gain test system
Fig. 5. Gain values and noise spectra of bismuth-doped fibers with different lengths when pump power is 367 mW and signal power is -20 dBm. (a) Gain with input signal spectrum and output signal spectrum shown in inset when fiber length is 65 m; (b) noise spectra
Fig. 6. Gain of bismuth-doped fiber at 1450 nm versus pump power when total input signal power is -20 dBm and fiber length is 65 m
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Table 1. Basic characteristics of fibers
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Table 2. 20 dB gain ranges and bandwidths of bismuth-doped fibers with different lengths
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