Integral Method o Reciprocity in the Spectroscopy of Laser Crystals with Impurity Centers

Numerical modelling of ultimate spectral efficiency of information transmission in wavelength-division multiplexing (WDM) systems is carried out for the case when the noise of optical fibre amplifiers determines the system capacity. The number-state model is used for finding spectral efficiency of communication lines with erbium-doped (EDFA) and chromiumdoped fibre amplifiers (CDFA). The results obtained show that spectral efficiency of CDFA exceeds that of EDFA throughout the conventional band and approaches the "quantum limit" in a window of transparency of advanced fibres in the high pump power limit. The ultimate capacity of communication systems with CDFA is estimated to be about 300 Tbit/s.

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“…The stimulated emission cross-section spectra calculated by the integral reciprocity method [12] using the radiative lifetime obtained from Judd-Offelt analysis [9] are shown in Fig.3. The highest stimulated emission cross section of about 2.1×10 -20 cm 2 is located at 1531 nm.…”

Section: Spectroscopymentioning

confidence: 99%

Passive Q-switching of Yb bulk lasers by a graphene saturable absorber

et al. 2016

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Integral Method o Reciprocity in the Spectroscopy of Laser Crystals with Impurity Centers

Cited by 96 publications

References 8 publications

Stokes and anti‐Stokes luminescence from cubic elpasolite Cs2NaYF6 crystals doped with Er3+and Yb3+ ions

Stokes and anti‐Stokes luminescence from cubic elpasolite Cs2NaYF6 crystals doped with Er3+and Yb3+ ions

Ultimate spectral efficiency of information transmission of fibre amplifiers in WDM systems

Passive Q-switching of Yb bulk lasers by a graphene saturable absorber

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