2 W bismuth doped fiber lasers in the wavelength range 1300-1500 nm and variation of Bi-doped fiber parameters with core composition

Firstov, S. V.; Bufetov, I. A.; Khopin, V. F.; Shubin, A. V.; Смирнов, А.М.; Исхакова, Л. Д.; Vechkanov, N. N.; Guryanov, A. N.; Dianov, E. M.

doi:10.1002/lapl.200910058

Cited by 54 publications

(13 citation statements)

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“…Bismuth-doped silica glasses since the discovery of their near-IR (NIR) photoluminescence (PL) [1] attract much attention owing to the potential fiber laser applications [2][3][4]. Although the luminescent center (or centers) is not clearly identified up to now there exist some hypotheses and even numerical models that involve directly such a codopant as Al in the environment of Bi ions [5][6][7]. As a consequence we should recognize that not only the valence state of bismuth in a glass matrix should be the subject of investigation but also the role of other dopant.…”

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confidence: 99%

Optical spectroscopy of bismuth-doped pure silica fiber preform

et al. 2010

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confidence: 99%

Optical spectroscopy of bismuth-doped pure silica fiber preform

et al. 2010

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“…As can be observed in Fig. 5b, the corresponding saturation output signal power does depend on the pump power and ranges from + (7)(8) to + (14-16) dBm with the BDFA design. It should be noted that the maximum output signal power (defined as an output power at the gain equal to zero) is greater than + 20 dBm (100 mW) for all the BDFA configurations.…”

Section: Resultsmentioning

confidence: 75%

Compact and efficient O-band bismuth-doped phosphosilicate fiber amplifier for fiber-optic communications

Firstov

Khegai

Kharakhordin

et al. 2020

Sci Rep

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During last decades there has been considerable interest in developing a fiber amplifier for the 1.3-$$\upmu $$μm spectral region that is comparable in performance to the Er-doped fiber amplifier operating near 1.55 $$\upmu $$μm. It is due to the fact that most of the existing fiber-optic communication systems that dominate terrestrial networks could be used for the data transmission in O-band (1260–1360 nm), where dispersion compensation is not required, providing a low-cost increase of the capacity. In this regard, significant efforts of the research laboratories were initially directed towards the study of the praseodymium-doped fluoride fiber amplifier having high gain and output powers at the desired wavelengths. However, despite the fact that this type of amplifiers had rapidly appeared as a commercial amplifier prototype it did not receive widespread demand in the telecom industry because of its low efficiency. It stimulated the search of novel optical materials for this purpose. About 10 years ago, a new type of bismuth-doped active fibers was developed, which turned out to be a promising medium for amplification at 1.3 $$\upmu $$μm. Here, we report on the development of a compact and efficient 20-dB (achieved for signal powers between $$-40$$-40 and $$-10$$-10 dBm) bismuth-doped fiber amplifier for a wavelength region of 1300–1350 nm in the forward, backward and bi-directional configurations, which can be pumped by a commercially available laser diode at 1230 nm with an output power of 250 mW. The compactness of the tested amplifier was provided by using a depressed cladding active fiber with low bending loss, which was coiled on a reel with a radius of 1.5 cm. We studied the gain and noise figure characteristics at different pump and signal powers. A record gain coefficient of 0.18 dB/mW (at the pump-to-signal power conversion efficiency of above 27$$\%$$%) has been achieved.

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“…A strong peak is observed at ∼1170 nm, close to the desired operation wavelength, in correspondence to the first transition of (7,6) SWNTs [34]. Another band at ∼1028 nm is also seen, assigned to (6,5) SWNTs [34]. …”

Section: Introductionmentioning

confidence: 71%