本文選題：塑料光纖 + 制備　； 參考：《吉林大學(xué)》2015年碩士論文

【摘要】：早在上世紀(jì)60年代塑料光纖就出現(xiàn)了,但是發(fā)展很緩慢。進(jìn)入21世紀(jì),隨著互聯(lián)網(wǎng)和多媒體技術(shù)的普及,人們開始追求高品質(zhì)的生活和新技術(shù)。數(shù)據(jù)交互的速度和容量急劇增加,傳統(tǒng)的雙絞線和同軸電纜已經(jīng)不能滿足短距離高品質(zhì)數(shù)據(jù)傳輸?shù)男枨蟆Ｋ芰瞎饫w具有柔韌性好、損耗較小、帶寬寬等優(yōu)點(diǎn),是理想的短距離數(shù)據(jù)傳輸介質(zhì)。基于聚甲基丙烯酸甲酯的塑料光纖的損耗在100dB/km左右,使用長(zhǎng)度不能超過(guò)l00m,限制了應(yīng)用范圍。研制廉價(jià)的塑料光纖放大器可以解決這個(gè)問(wèn)題。共軛聚合物又被稱為“有機(jī)半導(dǎo)體”,它既可以通過(guò)電激勵(lì)發(fā)光也可以通過(guò)光激勵(lì)發(fā)光,他還具有短的熒光壽命和高的熒光效率,適合作為光纖激光器和放大器的增益介質(zhì)。本文探索了共軛聚合物CN-PPV摻雜塑料光纖的制備工藝,并研究了它的熒光特性和增益性質(zhì)。具體完成的內(nèi)容和取得的研究結(jié)果如下： (1)探索了PMMA作為纖芯材料的塑料光纖的制備工藝。通過(guò)文獻(xiàn)閱讀和多次實(shí)驗(yàn)總結(jié),研究了聚合溫度、聚合時(shí)間、鏈轉(zhuǎn)移劑及引發(fā)劑含量等參數(shù)對(duì)光纖預(yù)制棒、光纖拉制過(guò)程及光纖質(zhì)量的影響,確定了優(yōu)化的實(shí)驗(yàn)參數(shù)。通過(guò)這些優(yōu)化的的實(shí)驗(yàn)參數(shù),獲得了透明的、無(wú)小氣泡的PMMA預(yù)制棒；在150℃-160℃溫度范圍內(nèi)成功拉制PMMA光纖。此外還研究了塑料光纖端面拋光方法。 (2)研究了共軛聚合物CN-PPV摻雜塑料光纖的熒光特性。測(cè)量了CN-PPV在PMMA薄膜中的發(fā)射光譜和吸收光譜,通過(guò)相關(guān)公式求出了它的發(fā)射截面隨波長(zhǎng)的變化曲線,得到σemax=1.7×10-20m2。利用側(cè)面泵浦方法,測(cè)試了摻雜光纖發(fā)射光譜隨泵浦光傳輸距離變化的關(guān)系,發(fā)現(xiàn)光譜發(fā)生明顯紅移,在455nm處發(fā)射光譜峰值位置向長(zhǎng)波長(zhǎng)移動(dòng)了12nm。 (3)從理論上分析了摻雜CN-PPV塑料光纖的增益特性。通過(guò)求解速率方程和脈沖傳輸方程,分析了不同摻雜濃度光纖的信號(hào)增益隨泵浦功率的變化。了解到摻雜濃度為1ppm的光纖的最大增益為25dB;50cm長(zhǎng)的光纖,摻雜濃度為0.2ppm時(shí)具有光放大能力。這對(duì)研究CN-PPV摻雜光纖放大器和激光器有一定的參考價(jià)值。
[Abstract]:Plastic fiber appeared in the 1960 s, but it was slow to develop.In the 21st century, with the popularization of Internet and multimedia technology, people begin to pursue high quality life and new technology.The speed and capacity of data exchange increase rapidly. Traditional twisted pair cable and coaxial cable can not meet the demand of short distance and high quality data transmission.Plastic fiber has the advantages of good flexibility, low loss and wide bandwidth. It is an ideal medium for short distance data transmission.The loss of plastic fiber based on poly (methyl methacrylate) is about 100dB/km, and the length of use should not exceed 10m, which limits the application range.Developing cheap plastic fiber amplifiers can solve this problem.Conjugated polymers, also known as "organic semiconductors", can emit light by both electroluminescence and photoluminescence. It also has a short fluorescence lifetime and high fluorescence efficiency, so it is suitable for the gain medium of fiber lasers and amplifiers.In this paper, the preparation process of conjugated polymer CN-PPV doped plastic fiber is investigated, and its fluorescence and gain properties are studied.The details and findings of the study are as follows:1) the preparation process of plastic fiber with PMMA as core material was investigated.The effects of polymerization temperature, polymerization time, chain transfer agent and initiator content on fiber preform rod, fiber drawing process and fiber quality were studied through literature review and many experiments. The optimized experimental parameters were determined.Through these optimized experimental parameters, transparent and non-bubble PMMA prefabricated rods were obtained, and PMMA fibers were successfully drawn in the temperature range of 150 鈩，

本文編號(hào)：1772744