Open AccessW‐type highly erbium‐doped active soft‐glass fibre with high nonlinearity
Author(s) -
VazquezZuniga L.A.,
Feng X.,
Kwon Y.,
Kim H.,
Shi J.,
Loh W.,
Jeong Y.
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2016.0140
Subject(s) - materials science , erbium , doping , dispersion (optics) , wavelength , mixing (physics) , four wave mixing , zero dispersion wavelength , optics , nonlinear optics , continuous wave , nonlinear system , optical fiber , optoelectronics , composite material , dispersion shifted fiber , laser , physics , fiber , fiber optic sensor , quantum mechanics
A highly nonlinear W‐type erbium‐doped fibre with high dopant concentration made of three lead silicate glass materials (Schott SF57, LLF1 and SF6) is presented. The fibre is designed to have a flat anomalous dispersion at ∼1.55 μm, which is critical for enhancing parametric wavelength conversion. With this fibre, signals at ∼ 1.55 μm are successfully amplified in continuous‐wave and pico‐second‐pulsed formats with a 1.48 μm pump source. In particular, spectral broadening of over 350 nm together with strong degenerate four‐wave‐mixing effects is demonstrated. The authors highlight that this novel fibre combines, for first time to their knowledge, the benefits of highly doped active fibres with those of dispersion/nonlinearity‐engineered fibres.