Abstract
A new method for gain and noise figure enhancements in S-band thulium-doped fiber amplifier (TDFA) co-doped with aluminum is demonstrated using a macro-bending approach. The macro-bending suppresses both the amplified spontaneous emission (ASE) at 800 and 1,800 nm wavelength region and consequently improves the S-band gain of the TDFA. Gain enhancements between 5 and 8 dB are obtained with the macro-bending between 1,420 and 1,480 nm. The macro-bending also reduces the noise figure of the S-band TDFA.
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This work is financially funded by University Malaya High Impact Research Grant Scheme (Grant No: UM.C/HIR/MOHE/SC/01).
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Emami, S.D., Abdul-Rashid, H.A., Yasin, S.Z.M. et al. S-band gain and noise figure improvements in thulium-doped fiber amplifier by using macro-bending approach. Appl. Phys. B 108, 807–813 (2012). https://doi.org/10.1007/s00340-012-5216-1
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DOI: https://doi.org/10.1007/s00340-012-5216-1