Photonic crystal fiber, preparation method of photonic crystal fiber and supercontinuum light source

By introducing hydrogen and deuterium into photonic crystal fibers and applying an impermeable coating, combined with appropriate inclusion structures, the problem of optical fiber degradation caused by high-power light during supercontinuum generation is solved, and the long life and stability of the optical fiber are achieved, making it suitable for high-power light transmission applications.

CN114879301BActive Publication Date: 2025-10-03NKT PHOTONICS AS
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Patent Information

Application Number
CN202210516426.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2014-12-18
Filing Date
2015-12-15
Publication Date
2025-10-03
Estimated Expiration
2035-12-15

AI Technical Summary

Technical Problem

Existing photonic crystal fibers are susceptible to degradation due to high-power light during supercontinuum generation, especially near the emission end, where they suffer severe damage, resulting in a shortened lifespan.

Method used

Hydrogen and/or deuterium are introduced into the degradation-resistant length portion of the photonic crystal fiber, an airtight primary coating is applied to the cladding region, the fiber end is sealed to limit the diffusion of hydrogen and deuterium, and appropriate inclusion structure and material composition are combined to improve the degradation-resistant performance.

Benefits of technology

The degradation resistance of photonic crystal fibers is significantly improved, the service life is extended, and stability is maintained under high power conditions, ensuring efficient supercontinuum generation.

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Abstract

The present invention relates to a photonic crystal fiber (PCF), a method for preparing a PCF, and a supercontinuum light source comprising such a PCF. The PCF has a longitudinal axis and comprises a core extending along the length of the 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 microstructure length portion. In at least a degradation-resistant length portion of the microstructure length portion, the PCF comprises hydrogen and / or deuterium. In at least the degradation-resistant length portion, the PCF further comprises a primary coating surrounding the cladding region, the primary coating being oxidized at temperatures below T h is impermeable to hydrogen and / or deuterium at a temperature of h At least about 50°C, preferably 50°C <T h <250℃.
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Citation Information

Patent Citations

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    US20110116283A1

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