楊四剛 羅文勇 張巍

摘 要：該研究形成了具有自主知識(shí)產(chǎn)權(quán)的微結(jié)構(gòu)光纖制備的工藝技術(shù)體系，并構(gòu)建了微結(jié)構(gòu)光纖的科學(xué)制備流程，可實(shí)現(xiàn)基于定制型的微結(jié)構(gòu)光纖的結(jié)構(gòu)功能優(yōu)化和精確制備，并完成了可用于精細(xì)化控制微結(jié)構(gòu)光纖拉制的窄溫場(chǎng)拉絲塔建設(shè)，可用于實(shí)現(xiàn)微結(jié)構(gòu)光纖的初步規(guī)?；a(chǎn)；基于微結(jié)構(gòu)光纖的超強(qiáng)抗彎的技術(shù)研究，提出了超強(qiáng)抗彎光纖的企業(yè)標(biāo)準(zhǔn)，將抗彎光纖的彎曲半徑提升到2 mm，超過(guò)當(dāng)前國(guó)際ITU-T最高水平的一倍以上的水平，在微結(jié)構(gòu)光纖的功能的標(biāo)準(zhǔn)化方面做出了初步的探索；自主設(shè)計(jì)了零色散波長(zhǎng)在1060 nm的光子晶體光纖，在武漢郵電科學(xué)研究院進(jìn)行了實(shí)際制作。實(shí)驗(yàn)研究證明，制作出的光子晶體光纖在1060 nm波段泵浦時(shí)可以提供顯著的參量增益。利用制作的光子晶體光纖，成功實(shí)現(xiàn)了輸出波長(zhǎng)在1.0μm波段連續(xù)可調(diào)的光纖參量振蕩器，波長(zhǎng)調(diào)諧范圍從890～1270 nm；基于雙零色散微結(jié)構(gòu)光纖，同時(shí)產(chǎn)生了可見(jiàn)色散波和中紅外色散波，利用可見(jiàn)波段的色散波和800 nm泵浦波之間的交叉相位調(diào)制作用，產(chǎn)生了200～400 nm的紫外光；因此實(shí)現(xiàn)了在近紅外和可見(jiàn)光、紫外光的大跨度波長(zhǎng)變換；在先期工作基礎(chǔ)上提出并論證了發(fā)展光纖基實(shí)用化偏振糾纏雙光子源的全保偏方案，以此為基礎(chǔ)發(fā)展出光纖基偏振糾纏雙光子源實(shí)驗(yàn)樣機(jī)，并提供中科大量子物理與量子信息相關(guān)研究組試用。進(jìn)一步的，提出并論證了在同一保偏光纖中實(shí)現(xiàn)兩可預(yù)報(bào)單光子源，并實(shí)驗(yàn)實(shí)現(xiàn)了輸出光子間的HOM干涉。這一工作論證了光纖基量子光源輸出量子態(tài)的量子相干特性，對(duì)于后續(xù)開(kāi)展光纖基量子光源的實(shí)際應(yīng)用研究具有重要意義；在先期工作以完成布拉格光纖氣體傳感應(yīng)用的基礎(chǔ)上，創(chuàng)新地將聚合物光纖拉絲工藝與反諧振太赫茲波導(dǎo)的制備工作相結(jié)合，制備出光滑薄壁聚合物太赫茲波導(dǎo)管，實(shí)驗(yàn)論證了該波導(dǎo)在太赫茲波段具有優(yōu)良的多模導(dǎo)波性能。進(jìn)一步提出了一種新型自支撐反諧振太赫茲波導(dǎo)結(jié)構(gòu)，理論和實(shí)驗(yàn)表明該結(jié)構(gòu)在大帶寬范圍內(nèi)低損耗導(dǎo)波，并具有單模太赫茲導(dǎo)波特性。這是首個(gè)報(bào)道的支持單模傳輸?shù)拇罂讖椒粗C振太赫茲波導(dǎo)設(shè)計(jì)，具有重要的學(xué)術(shù)和應(yīng)用價(jià)值。

關(guān)鍵詞：微結(jié)構(gòu)光纖 精確制備 標(biāo)準(zhǔn)化 波長(zhǎng)變換 量子光源

Abstract：Thefabricationtechnology architecture of microstructured fibers with independent intellectual property rights has been obtained. A scientific fabrication process has also been built up. The microstructured fiber can be fabricated with the structural parameters coincided well with the theoretical design. A fiber drawing tower with narrow temperature field has also been developed. All these progresses can be used for large-scale production. Based on the theoretical and experimental investigations of bend insensitive optical fiber with ultra-high anti-bending performance， a corporation standard has been brought forward. The bending radius can be reduced to be only 2 mm， which is only half of the value specified by ITU. Primary works have been done for functional standardization. Microstructured fibers with zero dispersion wavelengths located at 1060 nm are designed and fabricated. In experiment， significant parametric gain can be obserevd with the fibers pumped near 1060 nm. Continuously tuned parametric oscillator is achieved in 1.0 μm wavelength band， and the output wavelength can be tuned from 890 nm to 1270 nm. Based on a PCF with two zero dispersion wavelengths designed and fabricated by us， giant dispersive waves are generated at visible and mid-infrared wavelength regions simultaneously. Based on the cross phase modulation between the visible dispersive wave and the pump wave at 800 nm， ultraviolet light can be generated in the wavelength region from 200 nm to 400 nm. Large span wavelength conversion from the infrared band to the visible light and even to ultraviolet band has been realized. A polarization maintaining scheme of fiber based polarization entangled photon pair sources is proposed and demonstrated. Based on the scheme， a prototype of practical quantum light source is developed and provided to research teams of quantum information for testing. Furthermore， a scheme of fiber based dual-heralded photon sources （D-HSPSs） is proposed and demonstrated. The HOM interferences between the output photons of the two HSPSs is realized. A fabrication process of THz fiber is proposed and demonstrated. It can fabricate anti-resonance THz pipe with thin wall and smooth surface. Experiments showe that the thin wall pipe support low loss multimode THz transmission. Furthermore， a self-supporting anti-resonance THz waveguide structure is proposed and demonstrated. It can support low loss wide band single mode THz transmission.

Key Words：Microstructuredfiber；Accurate Fabrication；Standardization；Wavelength Conversion；Quantum Light Source

閱讀全文鏈接（需實(shí)名注冊(cè)）：http：//www.nstrs.cn/xiangxiBG.aspx？id=51859&flag=1