Erbium-ytterbium co-doped fluorothiophosphate glass single-mode optical fiber, preparation method and application thereof
A fluorothiophosphate, single-mode fiber technology, used in glass manufacturing equipment, cladding fibers, manufacturing tools, etc., can solve problems such as miniaturization and intensification of unfavorable fiber components, slow increase in fiber gain curve, and small unity gain. , to achieve the effect of simple and safe melting process, enhanced transition performance, and low threshold
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[0057] The present invention also provides the preparation method of the above-mentioned erbium-ytterbium co-doped fluorothiophosphate glass single-mode optical fiber, comprising the following steps:
[0058] Obtain cladding glass blanks and core glass blanks;
[0059] The core glass blank is made into a core preform, and then the core rod is prepared by heating and thinning the core preform;
[0060] The cladding preform is prepared by mechanical cold working on the cladding glass blank;
[0061] The core rod and the cladding preform are assembled, and the erbium-ytterbium co-doped fluorothiophosphate glass single-mode optical fiber is prepared by a heating and thinning process.
[0062] It can be understood that the core rod is formed by wire drawing to form a core, and the cladding preform is formed by wire drawing to form a cladding covering the surface of the core.
[0063] In some of these specific examples, the method for obtaining a cladding glass blank includes the ...
Embodiment 1
[0077] The present embodiment is a preparation process of an erbium-ytterbium co-doped high-gain fluorothiophosphate glass single-mode fiber as follows:
[0078] (1) Weigh the cladding and core glass raw materials by molar percentage, and the cladding components are: KPO 3 55%, Zn(PO 3 ) 2 10%, AlF 3 25%, Na 2 SO 4 10%. The core glass composition is: KPO 3 55%, Zn(PO 3 ) 2 10%, AlF 3 22%, Na 2 SO 4 10.5%, ErF 3 1%, YbF 3 1.5%.
[0079] (2) Melt the cladding and the core glass respectively, put the raw materials (cladding or core glass) weighed in step (1) into an agate mortar and mix well, then transfer to a platinum crucible, melt at 900°C It was prepared for 4 hours, and the melting process was continuously stirred. After that, it was homogenized and clarified to obtain glass liquid, which was then poured into a graphite mold preheated to 250 ° C for molding, and quickly transferred to an annealing furnace for precision annealing, and kept at 330 ° C. ...
Embodiment 2
[0082] The present embodiment is a preparation process of a high-gain erbium-ytterbium co-doped fluorothiophosphate glass single-mode fiber as follows:
[0083] (1) Weigh the cladding and core glass raw materials by molar percentage, and the cladding components are: KPO 3 44.5%, Zn(PO 3 ) 2 20%, AlF 3 25.5%, Na 2 SO 4 10%. The core glass composition is: KPO 3 35%, Zn(PO 3 ) 2 25%, AlF 3 24%, Na 2 SO 4 13.5%, ErF 3 1%, YbF 3 1.5%.
[0084] (2) Melt the cladding and the core glass respectively, put the raw materials (cladding or core glass) weighed in step (1) into an agate mortar and mix well, then transfer to a platinum crucible, melt at 950°C After 4 hours of preparation, the melting process continued to be stirred, after which it was homogenized and clarified to obtain molten glass, which was then poured into a graphite mold preheated to 320 ° C for molding, and quickly transferred to an annealing furnace for precision annealing, and kept at 330 ° C. ...
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