本文選題：黑磷 + 微納光纖��； 參考：《深圳大學(xué)》2017年碩士論文

【摘要】：新型二維材料黑磷自從被發(fā)現(xiàn)以來(lái),由于其獨(dú)特的二維結(jié)構(gòu)及光電特性,已經(jīng)受到了廣大研究者的關(guān)注。值得注意的是,黑磷是一種極具潛力的超緊湊非線性光學(xué)介質(zhì),其具有優(yōu)異的非線性系數(shù)。本文在實(shí)驗(yàn)上利用光沉積法成功制備出黑磷-微納光纖復(fù)合結(jié)構(gòu),這種復(fù)合結(jié)構(gòu)就是將黑磷的優(yōu)異非線性效應(yīng)(飽和吸收、光克爾效應(yīng))和微納光纖自身的優(yōu)勢(shì)相結(jié)合,并在實(shí)驗(yàn)上此復(fù)合結(jié)構(gòu)在全光纖系統(tǒng)中實(shí)現(xiàn)全光調(diào)制和波長(zhǎng)轉(zhuǎn)換。由于黑磷-微納光纖復(fù)合結(jié)構(gòu)具有飽和吸收效應(yīng),使得該非線性器件在全光纖系統(tǒng)中可用于實(shí)現(xiàn)全光調(diào)制及全光閾值。當(dāng)黑磷-微納光纖復(fù)合結(jié)構(gòu)作用于全光纖系統(tǒng)時(shí),該器件不但可通過(guò)泵浦光的強(qiáng)弱來(lái)調(diào)節(jié)信號(hào)的開(kāi)/關(guān)狀態(tài),而且可用于提高信號(hào)的信噪比,實(shí)現(xiàn)了光調(diào)制器的消光比為4.7,以及光閾值器將脈沖信號(hào)的信噪比從3.54提高至17.5,光閾值器件的使用有助于進(jìn)一步提高全光調(diào)制的質(zhì)量。該器件可與全光纖系統(tǒng)無(wú)縫融合,有望在未來(lái)的全光網(wǎng)絡(luò)中得到廣泛應(yīng)用。本文通過(guò)黑磷與微納光纖波導(dǎo)相結(jié)合,成功在器件中觀察到交叉相位調(diào)制以及四波混頻現(xiàn)象,實(shí)現(xiàn)了消光比可達(dá)到26dB,波長(zhǎng)工作轉(zhuǎn)換范圍為18nm以上的全光克爾光開(kāi)關(guān)。同時(shí)實(shí)驗(yàn)結(jié)果表明本文所研究的黑磷新型二維材料具有優(yōu)良的非線性光學(xué)效應(yīng),在全光纖系統(tǒng)中實(shí)現(xiàn)在通信波段的波長(zhǎng)轉(zhuǎn)換、光學(xué)信號(hào)的產(chǎn)生以及微型光電器件等方面具有巨大的應(yīng)用和發(fā)展前景。
[Abstract]:Black phosphorus, a new two-dimensional material, has attracted much attention since it was discovered because of its unique two-dimensional structure and optoelectronic properties. It is worth noting that black phosphorus is a potential ultra-compact nonlinear optical medium with excellent nonlinear coefficients. In this paper, the black phosphorus-micro-nano fiber composite structure has been successfully fabricated by photodeposition method. This composite structure combines the excellent nonlinear effect (saturation absorption, optical Kerr effect) of black phosphorus with the superiority of micro-nano fiber itself. Experimental results show that the composite structure can realize all-optical modulation and wavelength conversion in all-fiber systems. Due to the saturation absorption effect of the black phosphorus-micro-nano fiber composite structure, the nonlinear device can be used to realize all-optical modulation and all-optical threshold in all-fiber system. When the composite structure of black phosphorus-micro-nano fiber acts on the all-fiber system, the device can not only adjust the on / off state of the signal by the intensity of the pump light, but also improve the signal-to-noise ratio of the signal. The extinction ratio of the optical modulator is 4.7 and the signal to noise ratio of the pulse signal is increased from 3.54 to 17.5 by the optical threshold device. The use of the optical threshold device can further improve the quality of all-optical modulation. The device can be seamlessly integrated with all optical fiber systems, and it is expected to be widely used in all optical networks in the future. In this paper, the cross phase modulation and four wave mixing phenomena have been observed successfully in the device by combining black phosphorus with micro and nano fiber waveguide. The extinction ratio can reach 26 dB and the wavelength conversion range is above 18nm. At the same time, the experimental results show that the novel two dimensional black phosphorus material studied in this paper has excellent nonlinear optical effect, and the wavelength conversion in the communication band is realized in all optical fiber systems. The generation of optical signals and micro optoelectronic devices have great application and development prospects.
【學(xué)位授予單位】：深圳大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN253;TN761

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 伍曉芹;王依霈;童利民;;微納光纖及其應(yīng)用[J];物理;2015年06期

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本文編號(hào)：1801222