Hollow-core microstructured photonic crystal fiber for e.g. sensing liquid, has hollow core filled with liquid having certain refraction index, and cladding holes filled liquid having different refraction indexes

NOVELTY – The fiber has a hollow core and a cladding including high air content surrounded by cladding of silica, other vitreous or polymeric material. Liquid having a certain refraction index fills the core and liquid having different refraction index fills cladding holes. The cladding holes are alternatively filled with a material selected from sol-gel and a polymer. The cladding holes in an end are blocked by electric arc generated by a fiber fusion splicer, and a central hole on another end is blocked by polymer introduced into the core. USE – Hollow-core microstructured photonic crystal fiber for sensing liquid and performing a non-linear optics experiment in the liquid. ADVANTAGE – The fiber allows the total internal reflection of the light and full superposition/interaction between the liquid and radiation, provides a long interaction length, and reduces the number of guided modes in the liquid-core fiber, thus reducing the weight and cost of the fiber. DETAILED DESCRIPTION – INDEPENDENT CLAIMS are also included for the following: (1) a method for filling a core and cladding holes of an optical fiber with liquid (2) a method for reducing number of guided modes in an optical fiber. DESCRIPTION OF DRAWING(S) – The drawing shows a screen shot of a hollow-core microstructured fiber.

Main Application Field

A89 (Photographic, laboratory equipment, optical – including electrophotographic, thermographic uses.); P81 (Optics (G02).); V07 (Fibre-optics and Light Control); X26 (Lighting)

INVENTORS:

DE BARROS CORDEIRO CRISTIANO MONTEIRO
DE MATOS CHRISTIANO JOSE SANTIAGO
DOS SANTOS ELIANE MOURA
DOS SANTOS FERREIRA DANIEL
DE BRITO CRUZ CARLOS HENRIQUE

170_NUCLEO

Patent number: WO2009055888-A1;BR200705636-A2

PATENT STATUS:

For information contact Inova Unicamp

FOR ADDITIONAL INFORMATION:

parcerias@inova.unicamp.br

+55 (19) 3521-5207 / 2607