Energy transfer between Er3+ and Pr3+ in chalcogenide glasses for dual-wavelength fiber-optic amplifiers

Abstract

Ge–As–Ga–S glasses codoped with Er3+ and Pr3+ were synthesized for fiber-optic amplifiers operating in both 1.3 and 1.5 μm communication windows. The energy transfer between Er3+ and Pr3+ in Ge–As–Ga–S glasses was analyzed quantitatively using rate equations. The energy transfer coefficients responsible for two different energy transfer routes were 2.2(±0.05)×10−18 (Er3+:4I11/2→Pr3+:1G4) and 5.6(±0.05)×10−17 s−1 cm3 (Er3+:4I13/2→Pr3+:3F4,3), respectively. The former transfer process enhanced amplification efficiency in 1.3 μm band, while the latter reduced efficiency in the 1.5 μm band. Numerical simulation of the amplification characteristics demonstrated that signal gains of 30 and 40 dB were possible in 1.3 and 1.5 μm bands, respectively.

Optical spectroscopy of zinc metaphosphate glasses activated by Ce3+and Tb3+ions

“…The phenomenon of resonant energy transfer among impurity ions in a solid material has been the subject of intense research during recent decades, mainly because of its importance in the development of efficient phosphor materials (such as flat panel displays [1] and radiation detectors [2]), fibre-optic amplifiers (used in communication devices [3][4][5]), and solid state laser sources, in which the energy transfer processes can cause the reduction of the laser threshold due to an enhancement of the luminescence emission [6,7].…”

Phase Transformation and Intense 2.7 μm Emission from Er3+ Doped YF3/YOF Submicron-crystals

“…Among all the rare-earth ions, Er 3+ fluorescence emitting at 2.7 μm, due to the 4 I 11/2 → 4 I 13/2 transition, plays a key role in the investigations and has been achieved in many kinds of glasses17181920, glass ceramics21 and single-crystals22 hosts. However, many kinds of factors must be considered in order to obtain high mid-infrared luminous efficiency23. Among them, a minimal absorption coefficient in the typical H 2 O absorption band around 3 μm and lower phonon energy of the host materials are the extremely important influencing factors24.…”

Photoluminescence and phonon spectrum studies of arsenide sulfide compound doped with rare earth elements

“…The practical application of glasses doped with rare earth elements (NTE) in optoelectronic devices (including lasers, displays, white light diodes) creates interest in the study of their optical properties. Thus, energy transfer between glasses (NTE) allows the creation of highly efficient radiation sources [1]. In work [2] the α-As2S3 compound is considered an important material with its optical properties in the infrared region of the spectrum.…”