Open AccessDynamic selective etching: a facile route to parabolic optical fiber nano-probe
Author(s) -
Wenyue Zhu,
Tielin Shi,
Zirong Tang,
Bo Gong,
Guanglan Liao,
J.W. Tully
Publication year - 2013
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.006919
Subject(s) - optics , materials science , controllability , etching (microfabrication) , optical fiber , nano , fiber , ligand cone angle , optoelectronics , nanotechnology , conical surface , composite material , physics , mathematics , layer (electronics)
A dynamic etching approach is proposed through the appropriate variation of etchant composition ratio during the etching process, resulting in the parabolic shape of optical fiber nano-probe with a favorable changing of cone angle. The probe formation mechanism is thoroughly analyzed to illustrate the controllability and simplicity of this method. Optical properties of as-made probes are simulated and experimentally characterized and compared with the linear shape probes of different cone angles. It shows that the parabolic shape probes are superior to the linear shape ones with respect to the transmission efficiency and light focusing capability.