Full-band optical signal amplification using bismuth-doped multicomponent fibers: models and performance

Xiaoan Zhao; Chun Jiang

doi:10.1117/12.3048621

5 December 2024 Full-band optical signal amplification using bismuth-doped multicomponent fibers: models and performance

Xiaoan Zhao, Chun Jiang

Author Affiliations +

Proceedings Volume 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024); 134182Z (2024) https://doi.org/10.1117/12.3048621
Event: 15th International Conference on Information Optics and Photonics (CIOP2024), 2024, Xi’an, China

Abstract

Current wavelength division multiplexing (WDM) transmission systems based on silica fibers rely on the single-channel transmission rate and the number of wavelength channels for communication capacity. While single-channel rates have reached Tb/s levels, further enhancement is severely limited by electronic bottlenecks. To boost system capacity, an effective approach is to increase the number of wavelength channels. The low-loss window of silica fibers, spanning 1250-1800 nm with a loss below 0.4 dB, represents a substantial untapped resource. To fully utilize the full-band bandwidth of silica fibers, it is imperative to develop a full-band fiber amplifier covering this wavelength range. This paper proposes bismuth-doped multicomponent fiber concatenation and parallel connection schemes, establishes energy level structures, rate equations, and power propagation equations for pump, signal, and amplified spontaneous emission light in bismuth-doped silica and germano-silica matrices, calculates the full-band gain spectrum, and optimizes its flatness using a genetic algorithm. Results show that the gain magnitude and flatness of the two amplifier structures depend on pump wavelength, pump power, fiber length, and doping concentration, with the parallel structure offering greater flexibility in controlling the full-band gain spectrum.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xiaoan Zhao and Chun Jiang "Full-band optical signal amplification using bismuth-doped multicomponent fibers: models and performance", Proc. SPIE 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024), 134182Z (5 December 2024); https://doi.org/10.1117/12.3048621

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