光谱学与光谱分析
光譜學與光譜分析
광보학여광보분석
SPECTROSCOPY AND SPECTRAL ANALYSIS
2014年
3期
577-581
,共5页
罗云瀚%陈小龙%徐梦云%葛嘉%张怡龙%何永红%唐洁媛%余健辉%张军%陈哲%陈星旦
囉雲瀚%陳小龍%徐夢雲%葛嘉%張怡龍%何永紅%唐潔媛%餘健輝%張軍%陳哲%陳星旦
라운한%진소룡%서몽운%갈가%장이룡%하영홍%당길원%여건휘%장군%진철%진성단
光纤传感器%表面等离子体共振%侧边抛磨光纤%光谱灵敏度
光纖傳感器%錶麵等離子體共振%側邊拋磨光纖%光譜靈敏度
광섬전감기%표면등리자체공진%측변포마광섬%광보령민도
Optic fiber sensor%Surface plasmon resonance%Side polished fiber%Spectral sensitivity
表面等离子体共振传感是基于光学消逝波与金属表面等离子体波共振的一种高灵敏度、快速、无标记的测量方式。光纤的表面等离子体共振传感具有在线测量、体积小、抗电磁干扰等优点。为提高折射率传感灵敏度，采用轮式侧边抛磨法抛磨掉多模光纤的全部包层和部分纤芯，并采用溅射法在光纤抛磨区先镀高折射率的铬层然后镀金膜，制作了侧边抛磨光纤表面等离子体共振传感器。研究结果表明：该传感器可实现液体折射率在1.333～1.431 RIU范围的测试，平均光谱灵敏度为4.11×103 nm · RIU -1，在1.417～1.431 RIU折射率范围内光谱灵敏度达1.09×104 nm · RIU -1，折射率测量范围和光谱灵敏度均优于已报道的结果。此外，该传感器具有良好的稳定性与重复性实验测试，最小分辨率约为3.6×10-5 RIU。该传感器光谱灵敏度高、检测范围大、尺寸小及良好的稳定性与重复性等优点，可被用于食品检测、环境监测、生物医学检测等相关领域。
錶麵等離子體共振傳感是基于光學消逝波與金屬錶麵等離子體波共振的一種高靈敏度、快速、無標記的測量方式。光纖的錶麵等離子體共振傳感具有在線測量、體積小、抗電磁榦擾等優點。為提高摺射率傳感靈敏度，採用輪式側邊拋磨法拋磨掉多模光纖的全部包層和部分纖芯，併採用濺射法在光纖拋磨區先鍍高摺射率的鉻層然後鍍金膜，製作瞭側邊拋磨光纖錶麵等離子體共振傳感器。研究結果錶明：該傳感器可實現液體摺射率在1.333～1.431 RIU範圍的測試，平均光譜靈敏度為4.11×103 nm · RIU -1，在1.417～1.431 RIU摺射率範圍內光譜靈敏度達1.09×104 nm · RIU -1，摺射率測量範圍和光譜靈敏度均優于已報道的結果。此外，該傳感器具有良好的穩定性與重複性實驗測試，最小分辨率約為3.6×10-5 RIU。該傳感器光譜靈敏度高、檢測範圍大、呎吋小及良好的穩定性與重複性等優點，可被用于食品檢測、環境鑑測、生物醫學檢測等相關領域。
표면등리자체공진전감시기우광학소서파여금속표면등리자체파공진적일충고령민도、쾌속、무표기적측량방식。광섬적표면등리자체공진전감구유재선측량、체적소、항전자간우등우점。위제고절사솔전감령민도，채용륜식측변포마법포마도다모광섬적전부포층화부분섬심，병채용천사법재광섬포마구선도고절사솔적락층연후도금막，제작료측변포마광섬표면등리자체공진전감기。연구결과표명：해전감기가실현액체절사솔재1.333～1.431 RIU범위적측시，평균광보령민도위4.11×103 nm · RIU -1，재1.417～1.431 RIU절사솔범위내광보령민도체1.09×104 nm · RIU -1，절사솔측량범위화광보령민도균우우이보도적결과。차외，해전감기구유량호적은정성여중복성실험측시，최소분변솔약위3.6×10-5 RIU。해전감기광보령민도고、검측범위대、척촌소급량호적은정성여중복성등우점，가피용우식품검측、배경감측、생물의학검측등상관영역。
Surface plasmon resonance ,which utilizes the resonance of optical evanescent wave with the metal surface plasmon wave ,has been developed into a high sensitivity ,rapid ,label-less measurement method for chemical and biological analysis .In order to improve the spectral sensitivity in refractive index for a side polished fiber surface plasmon resonance sensor ,the whole cladding layer and part of core of a multimode fiber was polished off .Additionally ,an extra chrome layer with relatively high re-fractive index was coated on the polished zone before a gold film .The results showed that the sensor can measure the refractive index range from 1.333 to 1.431 RIU ,with the average spectral sensitivity of 4.11 × 103 nm · RIU -1 ,which is better than the reported results .Especially ,in the refractive index range of 1.417~1.431 RIU ,the sensitivity reaches to 1.09 × 104 nm · RIU -1 .The minimum resolution of approximately 3.6 × 10-5 RIU was estimated by a combination analysis with the sensor sen-sitivity and stability .The superiorities possessed by the proposed sensor in high sensitivity ,wide detection range ,small size and good stability and reproducibility ,etc .,make it a good candidate for food testing ,environmental monitoring ,biomedical testing and other related fields .
