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《Acta Optica Sinica》 2017-08
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All-Solid Dual-Concentric-Core Microstructure Fiber for Dispersion Compensation

Wang Wei;Qu Yuwei;Zuo Yuting;Wang Junqi;Meng Fanchao;Zhang Chunlan;Han Ying;Hou Lantian;School of Information Science and Engineering,Yanshan University;Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province;  
An all-solid dual-concentric-core microstructure fiber for dispersion compensation is proposed.In order to form dual-concentric-core structure,a high refractive index silica cylinder doped with Ge and two low refractive index silica cylinders doped with fluorine or boron are introduced in pure silica to adjust refractive index distribution of cross-section.The evolution and coupling characteristics of fiber mode are theoretical analyzed.The relationships among mode coupling position,intensity and fiber structure parameters are studied by multi-pole method,and the relationship between dispersion characteristic and fiber structure parameter is studied.Two kinds of optical fiber are designed when we optimize fiber structure parameters.Fiber 1 with dispersion value of -8465ps/(nm·km)at1550nm and its splicing loss with SMF-28 fiber is only 1.89 dB,and a dispersion value of SMF-28 single mode fiber with 500-fold length of fiber 1can be compensated.The splicing loss is only 1.41 dB at 1550 nm,and a dispersion value of SMF-28 single mode fiber with 15.5-fold length of fiber 2 in the C band can be compensated.The maximum residual dispersion absolute value is only 1.38ps/nm.Compared with silica-air microstructure fibers,the all-solid dispersion compensating microstructure fiber proposed is easier to fabricate and splice to the traditional communication fiber.
【Fund】: 国家自然科学基金(61405173 61405172);; 河北省自然科学基金(F2014203194);; 河北省教育厅科学研究计划(QN20131044);; 燕山大学青年自主研究计划(13LGB017);; 河北省高等学校科学技术研究项目(BJ2017108)
【CateGory Index】: TN253
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