基于石墨烯的微纳光纤环光控实验探索
发布时间：2019-06-21 09:44
【摘要】：微纳光纤环是利用微纳光纤制作的环形谐振腔结构,具有尺寸小、容易制作、谐振效果好的优点。石墨烯是单原子层结构的碳晶体材料,结构稳定,弹性好,坚固,具有独特的光学、电学特性。两者在器件研究领域都受到了广泛关注。本文的实验中制作了结型微纳光纤环,将石墨烯覆盖到微环上,并探索了基于石墨烯的微纳光纤环的光控特性。在实验中采用了二次拉锥的方式制作微纳光纤。这种方法设备简单,容易制作,可以制作均匀、低损耗的微纳光纤。通过手动打结及调节三维平移台的方式可以利用微纳光纤制作成所需尺寸的微纳光纤环。测试了微纳光纤环悬空时以及利用Mg F2片做衬底时的稳定性,结果表明利用衬底后,光谱更稳定,并且保持了很好的谐振效果。之后在微纳光纤环表面覆盖石墨烯,用紫光作为外界泵浦光照射在覆盖区域。采用了两种方式:一种是微纳光纤环垂直于Mg F2片并在接触位置覆盖上石墨烯,当紫光功率增大时,整体谱线没有明显的平移,谱线的品质因子增大;另一种方式是微纳光纤环平躺在Mg F2片上并覆盖上石墨烯,当紫光功率增大时,谱线发生了红移现象,在测量中最大的波长漂移量可达0.65nm,同时在某些波长,微纳光纤环的输出功率有很强的损耗,数值低于-85d Bm。该研究工作创新之处在于:1采用两种方式实现了石墨烯在微纳光纤环上的涂覆;2对于涂覆了石墨烯的微纳光纤环,采用紫光外界泵浦的方式获得了光控
[Abstract]:Micro-nano fiber ring is a ring resonator structure made of micro-nano fiber, which has the advantages of small size, easy fabrication and good resonance effect. Graphene is a kind of carbon crystal material with monatomic layer structure, which has stable structure, good elasticity, strong strength and unique optical and electrical properties. Both of them have received extensive attention in the field of device research. In this paper, the junction micro-nano fiber ring was fabricated, and graphene was covered on the microring, and the optical control characteristics of the micro-nano fiber ring based on graphene were explored. In the experiment, the micro-nano optical fiber is fabricated by secondary cone drawing. This method has the advantages of simple equipment, easy fabrication, uniform and low loss micro-nano optical fiber. By manually knotting and adjusting the three-dimensional translation table, the micro-nano fiber ring can be fabricated by using micro-nano fiber. The stability of micro-nano fiber ring when suspended and using Mg F2 chip as substrate is tested. the results show that the spectrum is more stable and the resonance effect is good when the substrate is used. After that, graphene was covered on the surface of micro-nano fiber ring, and purple light was used as external pump light to illuminate the covering area. Two ways are adopted: one is that the micro-nano fiber ring is perpendicular to the Mg F2 sheet and covered with graphene at the contact position. When the purple light power increases, the whole spectral line does not shift obviously and the quality factor of the spectral line increases. Another way is that the micro-nano fiber ring lies flat on the Mg F2 chip and covered with graphene. When the purple light power increases, the red shift occurs in the spectral line, and the maximum wavelength drift in the measurement can reach 0.65 nm. At the same time, at some wavelengths, the output power of the micro-nano fiber ring has a strong loss, the value is lower than-85 d Bm.. The innovations of this research work are as follows: (1) the coating of graphene on the micro-nano fiber ring is realized in two ways; (2) for the micro-nano fiber ring coated with graphene, the optical control is obtained by purple light external pumping.
【学位授予单位】：暨南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN253
本文编号：2503980
[Abstract]:Micro-nano fiber ring is a ring resonator structure made of micro-nano fiber, which has the advantages of small size, easy fabrication and good resonance effect. Graphene is a kind of carbon crystal material with monatomic layer structure, which has stable structure, good elasticity, strong strength and unique optical and electrical properties. Both of them have received extensive attention in the field of device research. In this paper, the junction micro-nano fiber ring was fabricated, and graphene was covered on the microring, and the optical control characteristics of the micro-nano fiber ring based on graphene were explored. In the experiment, the micro-nano optical fiber is fabricated by secondary cone drawing. This method has the advantages of simple equipment, easy fabrication, uniform and low loss micro-nano optical fiber. By manually knotting and adjusting the three-dimensional translation table, the micro-nano fiber ring can be fabricated by using micro-nano fiber. The stability of micro-nano fiber ring when suspended and using Mg F2 chip as substrate is tested. the results show that the spectrum is more stable and the resonance effect is good when the substrate is used. After that, graphene was covered on the surface of micro-nano fiber ring, and purple light was used as external pump light to illuminate the covering area. Two ways are adopted: one is that the micro-nano fiber ring is perpendicular to the Mg F2 sheet and covered with graphene at the contact position. When the purple light power increases, the whole spectral line does not shift obviously and the quality factor of the spectral line increases. Another way is that the micro-nano fiber ring lies flat on the Mg F2 chip and covered with graphene. When the purple light power increases, the red shift occurs in the spectral line, and the maximum wavelength drift in the measurement can reach 0.65 nm. At the same time, at some wavelengths, the output power of the micro-nano fiber ring has a strong loss, the value is lower than-85 d Bm.. The innovations of this research work are as follows: (1) the coating of graphene on the micro-nano fiber ring is realized in two ways; (2) for the micro-nano fiber ring coated with graphene, the optical control is obtained by purple light external pumping.
【学位授予单位】：暨南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN253
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