RADIATION-RESISTANT LASER OPTICAL FIBER PREFORM CORE ROD AND PREPARATION METHOD THEREFOR

WIPO Patent Application WO/2021/051954

A1

A radiation-resistant laser optical fiber preform core rod and a preparation method therefor. Specifically, provided is a radiation-resistant laser optical fiber preform core rod. Said core rod at least comprises one type of activated ion Yb 3+ or Er 3+ and one or more types of co-doped ion Al 3+, P 5+, Ge 4+, Ce 3+ or F -, and -OD group of 16-118 ppm. Also provided is a preparation method for the radiation-resistant laser optical fiber preform core rod, and the irradiation resistance of core rod glass can be effectively improved by sequentially performing pre-treatments, i.e. deuterium carrying, pre-irradiation and thermal annealing on a preform core rod. The electron paramagnetic resonance test shows that, under the same radiation condition, the radiation induced color center concentration in a preform core rod treated by the method above is lower than the radiation induced color center concentration in an untreated core rod by one or more orders of magnitude. The obtained core rod can be used for preparing a radiation-resistant rare earth-doped quartz optical fiber, and has the advantages of high laser slope efficiency, low background loss, being able to be used stably in a vacuum environment for a long time, etc.

JPS6144733	HALIDE GLASS FOR INFRARED LIGHT TRANSMISSION
JP3298799	CLADDING PUMP FIBER AND ITS PRODUCTION
JPH04349147	RADIATION-RESISTANT OPTICAL FIBER AND ITS PRODUCTION

SHAO CHONGYUN (CN)
HU LILI (CN)
YU CHUNLEI (CN)
LOU FENGGUANG (CN)
WANG MENG (CN)
JIAO YAN (CN)
ZHANG LEI (CN)
WANG SHIKAI (CN)
XU XIAOQING (CN)

PCT/CN2020/099708

March 25, 2021

July 01, 2020

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SHANGHAI INSTITUTES OF OPTICS AND FINE MECH CHINESE ACADEMY OF SCIENCES (CN)

C03C13/04; C03B37/016; C03B37/018; C03B37/025

CN111025459A	2020-04-17
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US8467123B2	2013-06-18
US9025925B2	2015-05-05
CN103373811A	2013-10-30
CN103864292A	2014-06-18
CN106116136A	2016-11-16

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