Fabrication of corrugated Ge-doped silica fibers.
We present a method of fabricating Ge-doped SiO2 fibers with corrugations around their full circumference for a desired length in the longitudinal direction. The procedure comprises three steps: hydrogenation of Ge-doped SiO2 fibers to increase photosensitivity, recording of Bragg gratings with ultraviolet light to achieve modulation of refractive index, and chemical etching. Finite-length, radially corrugated fibers may be used as couplers. Corrugated tapered fibers are used as high energy throughput probes in scanning near-field optical microscopy.
University of Warsaw, Faculty of Physics, Pasteura 7, 02-093 Warsaw, Poland. pwrobel@igf.fuw.edu.pl
P
P
Wróbel
T
T
Stefaniuk
T J
TJ
Antosiewicz
A
A
Libura
G
G
Nowak
T
T
Wejrzanowski
M
M
Andrzejczuk
K J
KJ
Kurzydłowski
K
K
Jedrzejewski
T
T
Szoplik
D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D005857:Germanium / Q000737:chemistry*; D008027:Light; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation; D012822:Silicon Dioxide / Q000737:chemistry*
D005857:Germanium; D012822:Silicon Dioxide