DEPENDENCE OF THE GAIN IN HfBi-EDFA ON THE PUMPING CONFIGURATION AND ACTIVE FIBER LENGTH

Abstract

In this study, gain dependence in Hafnium-Bismuth-Erbium co-doped fiber amplifier (HfBiEDFA) on pumping configuration and active fiber length were analyzed experimentally. Gain and signal output power characteristics of the heavily co-doped HfBi-EDFA pumped with a 980 nm pump laser were experimentally obtained for different pumping methods (forward, backward and bidirectional) as functions of pump power, signal input power, and wavelength. During the study, 0.3 m and 1.1 m long HfBi-EDF and a signal input power of -30 dBm at 1550 nm were used, and the pump power was increased from 60 mW to 204 mW. A moderate gain of over 11 dB was obtained in forward and backward pumping configurations but the gain has remained at around 7 dB in the bidirectional pumping configuration. The spectral gain measurements were realized across a 1520 nm - 1605 nm wavelength range, and the forward and backward pumping configurations resulted in the best gain values at 1532 nm with a gain of around 17 dB. It was also shown that when the HfBi-EDF length is 0.3 m, optical amplification in the C band is achieved. For the fiber length of 1.1 m, the gain spectrum shifts towards the L band.

Keywords

• Erbium Doped Fiber Amplifiers
• Hafnium-Bizmuth-Erbium Co-Doped Fiber
• HfBi-EDFA
• Gain Performance
• Broadband Fiber Optical Communication

HfBi-EDFA Yükselteç Kazanç Performansının Pompalama Konfigürasyonu Ve Aktif Fiber Uzunluğuna Bağımlılığı

Abstract

Bu çalışmada, Hafniyum-Bizmut-Erbiyum ortak katkılı fiber yükselteçte (HfBi-EDFA) kazancın pompalama konfigürasyonuna ve aktif fiber uzunluğuna bağımlılığı deneysel olarak analiz edilmiştir. 980 nm pompa lazeri ile pompalanan, yoğun katkılı HfBi-EDFA'nın üç farklı pompalama konfigürasyonu için (ileri, geri ve çift yönlü pompalamalı) kazanç ve sinyal çıkış gücü performansı, pompa gücü, sinyal giriş gücü ve dalga boyunun fonksiyonu olarak analiz edilmiştir. Deneysel çalışmada, aktif kazanç ortamı olarak 0,3 m ve 1.1 m uzunluklarında yoğun katkılı HfBi-EDF kullanılmış; sinyal giriş gücü 1550 nm dalgaboyunda -30 dBm'de sabit tutularak, pompa gücü 60 mW-204 mW aralığında değiştirilmiştir. İleri ve geri yönlü pompalamalı HfBi-EDFA için 11 dB'in üzerinde orta düzeyde bir kazanç elde edilirken, çift yönlü pompalamalı HfBi-EDFA için kazanç seviyesi 7 dB civarında kalmıştır. Üç farklı pompalama konfigürasyonu için kazanç spektrumu ölçümleri 1520 nm - 1605 nm dalga boyu aralığında gerçekleştirilmiş, ileri ve geri pompalamalı HfBi-EDFA konfigürasyonları için 1532 nm'de 17 dB civarında en iyi kazanç değeri elde edilmiştir. Bu çalışmada ayrıca, HfBi-EDF uzunluğu 0,3 m olduğunda C bandında optik amplifikasyonun sağlandığı gösterilmiştir. 1,1 m'lik aktif fiber uzunluğu için ise kazanç spektrumu L bandına doğru kaymaktadır.

Keywords

• Erbiyum Katkılı Fiber Yükselteçler
• Hafniyum-Bizmut-Erbiyum Ortak Katkılı Fiber
• HfBi-EDFA
• Kazanç Performansı
• Geniş Band Fiber Optik Haberleşme

References

1. Ahmad, A., Cheng, X., Paul, M., Dhar, A., Das, S., Ahmad, H., & Harun, S. (2018). Investigation of the Brillouin Effect in Highly Nonlinear Hafnium Bismuth Erbium Doped Fiber. Microwave and Optical Technology Letters, 61(1), 173-177. doi:https://doi.org/10.1002/mop.31522
2. Al-Azzawi, A. A., Almukhtar, A., Hamida, B., Das, S., Dhar, A., Paul, M., . . . Harun, S. (2019b). Wideband and Flat Gain Series Erbium Doped Fiber Amplifier Using Hybrid Active Fiber with Backward Pumping Distribution Technique. Results in Physics, 13(102186). doi:https://doi.org/10.1016/j.rinp.2019.102186
3. Al-Azzawi, A. A., Almukhtar, A., Hmood, J., Das, S., Dhar, A., Paul, M., & Harun, S. (2022). Broadband ASE Source for S + C + L Bands Using Hafnia-Bismuth Based Erbium Co-Doped Fibers. Optik, 255(168723). doi:https://doi.org/10.1016/j.ijleo.2022.168723
4. Al-Azzawi, A. A., Almukhtar, A., Reddy, P., Dutta, D., Das, S., Dhar, A., . . . Harun, S. (2018). Compact and Flat-Gain Fiber Optical Amplifier With Hafnia-Bismuth-Erbium Co-Doped Fiber. Optik, 170, 56-60. doi:https://doi.org/10.1016/j.ijleo.2018.05.104
5. Al-Azzawi, A. A., Almukhtar, A., Reddy, P., Dutta, D., Das, S., Dhar, A., . . . Harun, S. (2019a). Wide-Band Flat-Gain Optical Amplifier Using Hafnia And Zirconia Erbium Co-Doped Fibres in Double Pass Parallel Configuration. Journal of Modern Optics, 66(16), 1711-1716. doi:https://doi.org/10.1080/09500340.2019.1660813
6. Almukhtar, A. A., Al-Azzawi, A., Cheng, X., Reddy, P., Dhar, A., Paul, M., . . . Harun, S. (2020). Enhanced Triple-Pass Hybrid Erbium Doped Fiber Amplifier Using Distribution Pumping Scheme in a Dual-Stage Configuration. Optik, 204(164191). doi:https://doi.org/10.1016/j.ijleo.2020.164191
7. Almukhtar, A. A., Al-Azzawi, A., Jusoh, Z., Razak, N., Reddy, P., Dutta, D., . . . Harun, S. (2019). Flat-Gain Optical Amplification Within 70 nm Wavelength Band Using 199 cm Long Hybrid Erbium Fibers. Optoelectronics and Advanced Materials-Rapid Communications, 13(7-8), 391-395
8. Altuncu, A., & Basgumus, A. (2005). Gain enhancement in L-band loop EDFA through C-band signal injection. Photonics Technology Letters, 17(7), 1402-1404. doi:https://doi.org/10.1109/LPT.2005.848565

9. Chen, X. Y. (2023). Functional fibers and functional fiber-based components for high-power lasers. Advanced Fiber Materials, 5(1), 59-106. doi:https://doi.org/10.1007/s42765-022-00219-7
10. Durak, F. E., & Altuncu, A. (2018). All-optical Gain Clamping and Flattening in L-Band EDFAs Using Lasing-Controlled Structure With FBG. Optical Fiber Technology, 45, 217-222. doi:https://doi.org/10.1016/j.yofte.2018.07.014
11. Giles, C., & Desurvire, E. (1991). Modeling erbium-doped fiber amplifiers. Journal of Lightwave Technology, 9(2), 271-283. doi:https://doi.org/10.1109/50.65886
12. Konyshev, V. A. (2023). Trends of and Prospects for the Development of Fiber-Optic Communication Systems. Bulletin of the Lebedev Physics Institute, 50(4), S435-S450. doi:https://doi.org/10.3103/S1068335623160078
13. Renaudier, J. N. (2022). Devices and fibers for ultrawideband optical communications. Proceedings of the IEEE, 110(11), 1742-1759. doi:10.1109/JPROC.2022.3203215
14. Zakaria, U., Harun, S., Reddy, P., Dutta, D., Das, D., Das, S., . . . Yasin, M. (2018). Compact Tunable Hafnia Bismuth Erbium Co-Doped Fiber Laser. Journal of Non-Oxide Glasses, 10(3), 77-81. doi:https://doi.org/10.1016/j.ijleo.2022.168723
15. Zulkipli, N., Sadık, S., Durak, F., Paul, M., Altuncu, A., & Harun, S. (2021). Gain Clamping Performance of Hafnia-Bismuth-Erbium Co-doped Fibre Amplifier Using Lasing Controlled Structure with FBG. Journal of Modern Optics, 68(8), 457-462. doi:https://doi.org/10.1080/09500340.2021.1912424