Abstract
An emission band with a maximum at 1430 nm and a FWHM of 100 nm was observed in a Bi-doped fiber under core-pumping in the 1340- 1370 nm wavelength range. Net gain in 1430-1490 nm and laser action in 1443-1459 nm wavelength range in the Bi-doped aluminosilicate fiber have been demonstrated for the first time to our knowledge.
Highlights
Broadband amplifiers in the S-band (1460-1530 nm) and E-band (1360-1460 nm) of the low optical loss telecommunication window based on the active fibers compatible with common telecommunication fibers are required for further increase of telecommunication data traffic [1]
We report on the first observation of the wide fluorescence band in a 14001500 nm diapason in the Bi-doped aluminosilicate fiber of low non-linearity fully compatible with common telecommunication fibers
The laser oscillation was obtained in a ring cavity constructed with another optical fiber coupler or in a linear cavity formed with UV-written fiber Bragg gratings (FBG) [2]
Summary
Broadband amplifiers in the S-band (1460-1530 nm) and E-band (1360-1460 nm) of the low optical loss telecommunication window based on the active fibers compatible with common telecommunication fibers are required for further increase of telecommunication data traffic [1]. Authors [3] investigated P2O5-GeO2-SiO2-Bi2O3 core preforms and fibers and reported on the red-shifted broadband fluorescence with peak at 1300 nm observed in glass of such composition. In a fiber of GeO2-SiO2-Bi2O3 core composition a single broad fluorescence band with the maximum at 1450 fiber was observed at 976 and 808 nm excitation [7]. We report on the first observation of the wide fluorescence band in a 14001500 nm diapason in the Bi-doped aluminosilicate fiber of low non-linearity fully compatible with common telecommunication fibers. The net gain and laser oscillation within this band are demonstrated for the first time to our knowledge
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