基于石墨烯的微納光纖環(huán)光控實驗探索
發(fā)布時間：2019-06-21 09:44
【摘要】：微納光纖環(huán)是利用微納光纖制作的環(huán)形諧振腔結(jié)構(gòu),具有尺寸小、容易制作、諧振效果好的優(yōu)點。石墨烯是單原子層結(jié)構(gòu)的碳晶體材料,結(jié)構(gòu)穩(wěn)定,彈性好,堅固,具有獨特的光學(xué)、電學(xué)特性。兩者在器件研究領(lǐng)域都受到了廣泛關(guān)注。本文的實驗中制作了結(jié)型微納光纖環(huán),將石墨烯覆蓋到微環(huán)上,并探索了基于石墨烯的微納光纖環(huán)的光控特性。在實驗中采用了二次拉錐的方式制作微納光纖。這種方法設(shè)備簡單,容易制作,可以制作均勻、低損耗的微納光纖。通過手動打結(jié)及調(diào)節(jié)三維平移臺的方式可以利用微納光纖制作成所需尺寸的微納光纖環(huán)。測試了微納光纖環(huán)懸空時以及利用Mg F2片做襯底時的穩(wěn)定性,結(jié)果表明利用襯底后,光譜更穩(wěn)定,并且保持了很好的諧振效果。之后在微納光纖環(huán)表面覆蓋石墨烯,用紫光作為外界泵浦光照射在覆蓋區(qū)域。采用了兩種方式:一種是微納光纖環(huán)垂直于Mg F2片并在接觸位置覆蓋上石墨烯,當紫光功率增大時,整體譜線沒有明顯的平移,譜線的品質(zhì)因子增大;另一種方式是微納光纖環(huán)平躺在Mg F2片上并覆蓋上石墨烯,當紫光功率增大時,譜線發(fā)生了紅移現(xiàn)象,在測量中最大的波長漂移量可達0.65nm,同時在某些波長,微納光纖環(huán)的輸出功率有很強的損耗,數(shù)值低于-85d Bm。該研究工作創(chuàng)新之處在于:1采用兩種方式實現(xiàn)了石墨烯在微納光纖環(huán)上的涂覆;2對于涂覆了石墨烯的微納光纖環(huán),采用紫光外界泵浦的方式獲得了光控
[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.
【學(xué)位授予單位】：暨南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN253
本文編號：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.
【學(xué)位授予單位】：暨南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN253
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