Er3+-doped ultratransparent oxyfluoride glass-ceramics for application in the 1.54 micron telecommunication window

Victor K. Tikhomirov; David Furniss; Angela B. Seddon; M. Beggiora; Ian M. Reaney

doi:10.1117/12.513918

29 April 2003 Er³⁺-doped ultratransparent oxyfluoride glass-ceramics for application in the 1.54 micron telecommunication window

Victor K. Tikhomirov, David Furniss, Angela B. Seddon, M. Beggiora, Ian M. Reaney

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Proceedings Volume 5118, Nanotechnology; (2003) https://doi.org/10.1117/12.513918
Event: Microtechnologies for the New Millennium 2003, 2003, Maspalomas, Gran Canaria, Canary Islands, Spain

Abstract

We have fabricated ultra-transparent glass-ceramics in the system (SiO₂)(Al₂O₃)(CdF₂)(PbF₂)(ZnF2):x(ErF₃). Intensity, width and Stark-splitting of emission and absorption spectra of Er³⁺-dopants at 1.5 micron (⁴I_13/2↔⁴I_15/2 transitions) change with the size of PbF₂ nano-crystals hosting Er³⁺ dopants. We report the broadest and flattest emission spectrum of Er³⁺ and largest wavelength divergence of emission and absorption spectra for ⁴I_13/2↔⁴I_15/2 transitions to date. Er³⁺ dopants are efficient nucleation centres in (SiO₂)(Al₂O₃)(CdF₂)(PbF₂)(ZnF₂):x(ErF₃) oxy-fluoride glasses when heat-treated at 20 to 80°C above glass transition temperature Tg. The emission spectrum of Er³⁺ at 1.54 micron for the resulting glass-ceramics (GC) is the broadest (75 nm at the half-height-width in developed GC and up to 90 nm in quasi GC) and flattest (especially between 1530 to 1560 nm in quasi GC) to date to our knowledge. The broadness is of benefit for Erbium Doped Fibre Amplifier (EDFA) operating in the 1.54 micron fibre optic telecommunication window. The flatness is of benefit in the most often employed C-band of EDFA. We have achieved the largest reported wavelength divergence to date in the maximum of absorption (1505 nm) and emission (1544 nm) spectra of Er³⁺ in developed GC, which again is of benefit for reduction of noise in the EDFA caused by overlap of emission and absorption bands at about 1.54 μm (i.e. self-absorption).

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Victor K. Tikhomirov, David Furniss, Angela B. Seddon, M. Beggiora, and Ian M. Reaney "Er³⁺-doped ultratransparent oxyfluoride glass-ceramics for application in the 1.54 micron telecommunication window", Proc. SPIE 5118, Nanotechnology, (29 April 2003); https://doi.org/10.1117/12.513918

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KEYWORDS

Erbium

Glasses

Absorption

Optical amplifiers

Crystals

Lead

Telecommunications

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