Preparation of high energy throughput SNOM probes
Paper in proceedings, 2011

In this technical note we present technological steps of fabrication of high energy throughput SNOM probes. The core-metal coating interface of probes is corrugated what enhances photon-to-plasmon coupling. A strong evanescent field allows for reduction of aperture diameter, which together with skin depth of metal used for coating decide upon resolution. Probes are made of Ge-doped silica glass fibre, which is hydrogenated to increase its photosensitivity. A Bragg grating is recorded in the cores with UV light diffracted into +1 st/1st diffraction orders on a sinusoidal phase mask. Modulation of the refractive index is connected with different etch rates. Etching with the Turner method is made in aqueous solution of HF acid. A corrugated tapered fibre is then coated with aluminium in a special rotating holder. We present results of this novel multi step technology.


Coating interfaces

Refractive index

Corrugated metal


Aperture diameter

Hydrofluoric acid

High energy

Ge-doped silica


Skin depth

Metal coatings

Technical notes

Protective coatings

Bragg gratings

Fiber optic networks


Etch rates


Diffraction orders

aperture metal-coated probes

HF acid



Bragg grating

Phase masks

Evanescent fields

High energy physics

Transparent optical networks

Doping (additives)

corrugated tapered probes

Glass fibers


P. Wróbel

University of Warsaw

T. Stefaniuk

University of Warsaw

Tomasz Antosiewicz

Chalmers, Applied Physics, Condensed Matter Theory

A. Libura

Polish Academy of Sciences

G. Nowak

Polish Academy of Sciences

T. Wejrzanowski

Warsaw University of Technology

Mariusz Andrzejczuk

Warsaw University of Technology

K. Jedrzejewski

Warsaw University of Technology

T. Szoplik

University of Warsaw

13th International Conference on Transparent Optical Networks, ICTON 2011, Stockholm, 26-30 June 2011

2162-7339 (eISSN)

Subject Categories

Other Engineering and Technologies





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