Radiation-resistant polycrystalline fibers: from production technologies to property studies

Anastasia Yuzhakova; Alexander Lvov; Dmitrii Salimgareev; Ivan Yuzhakov; Polina Pestereva; Liya Zhukova

doi:10.3788/COL202523.040604

Chinese Optics Letters, Volume. 23, Issue 4, 040604(2025)

Radiation-resistant polycrystalline fibers: from production technologies to property studies

Anastasia Yuzhakova, Alexander Lvov, Dmitrii Salimgareev, Ivan Yuzhakov, Polina Pestereva, and Liya Zhukova^*

Scientific Laboratory of Fiber Technologies and Photonics, Institute of Chemical Engineering, Ural Federal University, Ekaterinburg 620002, Russia

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Fig. 1. Modeling results for the unclad fiber based on the Ag_0.97Tl_0.03Cl_0.26Br_0.74 single crystal. Temperature distributions at (a) an extrusion speed of 0.1 mm/min and (b) an extrusion speed of 0.5 mm/min. (c) The change in speed in the cut “blank–die–fiber” at 170°C.

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Fig. 2. Block diagram of the infrared polycrystalline fiber production based on the single crystals of the metal halides.

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Fig. 3. Transmission spectra of the 1-m-long optical fibers.

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Fig. 4. Fibers' intrinsic optical losses.

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Fig. 5. Transmission and optical loss spectra for clad optical fibers.

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Table 1. Fiber Extrusion Modes

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Table 1. Fiber Extrusion Modes

Composition	Temperature modeling (°C)	Temperature experiment (°C)	Extrusion speed (m/s)
Ag_0.97Tl_0.03Cl_0.26Br_0.74	175	175	0.35 ± 0.05
	170	170	0.30 ± 0.05
Ag_0.07Tl_0.93Cl_0.71Br_0.29	200	200	0.40 ± 0.05
	200	200	0.35 ± 0.05
Ag_0.97Tl_0.03Cl_0.24Br_0.74I_0.02	185	180	0.30 ± 0.05
	180	180	0.25 ± 0.05
Ag_0.94Tl_0.06Cl_0.24Br_0.73I_0.03	180	170	0.40 ± 0.05
	180	180	0.30 ± 0.05
Ag_0.91Tl_0.09Cl_0.23Br_0.72I_0.05	180	180	0.40 ± 0.05
	180	180	0.30 ± 0.05

Table 2. Cladding Fiber Extrusion Modes
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Table 2. Cladding Fiber Extrusion Modes
Core composition Temperature experiment (°C) Extrusion speed (m/s) Average pressure (MPa)
Ag_0.97Tl_0.03Cl_0.26Br_0.74 200 0.22 ± 0.04 3.2
Ag_0.94Tl_0.06Cl_0.24Br_0.73I_0.03 200 0.20 ± 0.04 3.2

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Anastasia Yuzhakova, Alexander Lvov, Dmitrii Salimgareev, Ivan Yuzhakov, Polina Pestereva, Liya Zhukova, "Radiation-resistant polycrystalline fibers: from production technologies to property studies," Chin. Opt. Lett. 23, 040604 (2025)

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