Thermal distribution analysis of multi-core photonic crystal fiber laser |
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| Authors: | Zheng Yi-bo YAO Jian-qu ZHANG Lei WANG Yuan WEN Wu-qi JING Lei DI Zhi-gang and KANG Jian-yi |
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| Affiliation: | Key Laboratory of Optoelectronics Information and Technical Science, Ministry of Education, Institute of Laser &
Optoelectronics, College of Precision Instruments and Optoelectronic Engineering, Tianjin Universiry, Tianjin 300072,
China;Hebei Key Laboratory of Optoelectronic Information and Geo-detection Technology, Shzjiazhuang University of;Key Laboratory of Optoelectronics Information and Technical Science, Ministry of Education, Institute of Laser &Optoelectronics, College of Precision Instruments and Optoelectronic Engineering, Tianjin Universiry, Tianjin 300072,
China;Hebei Key Laboratory of Optoelectronic Information and Geo-detection Technology, Shzjiazhuang University of
Economics, Shzjiazhuang 050031, China;Key Laboratory of Optoelectronics Information and Technical Science, Ministry of Education, Institute of Laser &
Optoelectronics, College of Precision Instruments and Optoelectronic Engineering, Tianjin Universiry, Tianjin 300072,
China;
2. Hebei Key Laboratory of Optoelectronic Information and Geo-detection Technology, Shzjiazhuang University of;Key Laboratory of Optoelectronics Information and Technical Science, Ministry of Education, Institute of Laser &
Optoelectronics, College of Precision Instruments and Optoelectronic Engineering, Tianjin Universiry, Tianjin 300072,
China;;Key Laboratory of Optoelectronics Information and Technical Science, Ministry of Education, Institute of Laser &
Optoelectronics, College of Precision Instruments and Optoelectronic Engineering, Tianjin Universiry, Tianjin 300072,
China;;Key Laboratory of Optoelectronics Information and Technical Science, Ministry of Education, Institute of Laser &
Optoelectronics, College of Precision Instruments and Optoelectronic Engineering, Tianjin Universiry, Tianjin 300072,
China;College of Information, Hebei United University, Tangshan 063009, China;Key Laboratory of Optoelectronics Information and Technical Science, Ministry of Education, Institute of Laser &
Optoelectronics, College of Precision Instruments and Optoelectronic Engineering, Tianjin Universiry, Tianjin 300072,
China; |
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| Abstract: | The thermal properties of photonic crystal fiber (PCF) laser with 18 circularly distributed cores are investigated by using
full-vector finite element method (FEM). The results show that the 18-core PCF has a more effective thermal dispersion construction
compared with the single core PCF and 19-core PCF. In addition, the temperature distribution of 18-core PCF laser with different
thermal loads is simulated. The results show that the core temperature approaches the fiber drawing value of 1800 K approximately
when the thermal load is above 80 W/m which corresponds to the pumping power of 600 W approximately, while the coating temperature
approaches the damage value of about 550 K when the thermal load is above 15 W/m which corresponds to the pumping power of
110 W approximately. Therefore the fiber cooling is necessary to achieve power scaling. Compared with other different cooling
systems, the copper cooling scheme is found to be an effective method to reduce the thermal effects. |
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