Nkt Photonics A/s

Casper Laur Byg

Carsten L Thomsen

Christian Jakobsen

Jens Kristian Lyngsøe

Thomas Tanggaard Alkeskjold

Martin Dybendal Maack

Thomas Vestergaard Andersen

Thomas Feuchter

Kim G Jespersen

Jeppe Johansen

Martin Erland Vestergaard Pedersen

Ole Bang

A Photonic Crystal Fiber (PCF) a method of its production and a supercontinuum light source comprising such PCF. The PCF has a longitudinal axis and includes a core extending along the length of said longitudinal axis and a cladding region surrounding the core. At least the cladding region includes a plurality of microstructures in the form of inclusions extending along the longitudinal axis of the PCF in at least a microstructured length section. In at least a degradation resistant length section of the microstructured length section the PCF includes hydrogen and/or deuterium. In at least the degradation resistant length section the PCF further includes a main coating surrounding the cladding region, which main coating is hermetic for the hydrogen and/or deuterium at a temperature below T, wherein Tis at least about 50° C., preferably 50° C.<T<250° C.

Photonic crystal fiber, a method of production thereof and a supercontinuum light source

A Photonic Crystal Fiber (PCF) a method of its production and a supercontinuum light source comprising such PCF. The PCF has a longitudinal axis and includes a core extending along the length of said longitudinal axis and a cladding region surrounding the core. At least the cladding region includes a plurality of microstructures in the form of inclusions extending along the longitudinal axis of the PCF in at least a microstructured length section. In at least a degradation resistant length section of the microstructured length section the PCF includes hydrogen and/or deuterium. In at least the degradation resistant length section the PCF further includes a main coating surrounding the cladding region, which main coating is hermetic for the hydrogen and/or deuterium at a temperature below T, wherein Tis at least about 50&#xb0; C., preferably 50&#xb0; C.&#x3c;T&#x3c;250&#xb0; C.

The invention concerns a Photonic Crystal Fiber (PCF) a method of its production and a supercontinuum light source comprising such PCF. The PCF has a longitudinal axis and comprises a core extending along the length of said longitudinal axis and a cladding region surrounding the core. At least the cladding region comprises a plurality of microstructures in the form of inclusions extending along the longitudinal axis of the PCF in at least a microstructured length section. In at least a degradation resistant length section of the microstructured length section the PCF comprises hydrogen and/or deuterium. In at least the degradation resistant length section the PCF further comprises a main coating surrounding the cladding region, which main coating is hermetic for the hydrogen and/or deuterium at a temperature below Th, wherein Th is at least about 50&#xb0; C., preferably 50&#xb0; C.&#x3c;Th&#x3c;250&#xb0; C.

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Kvistgård, Denmark

Casper Laur Byg