典型文献
High-sensitivity integrated SiN rib-waveguide long period grating refractometer
文献摘要：
In this research,we demonstrate a high-sensitivity integrated silicon nitride long period grating(LPG)refrac-tometer based on a rib waveguide with sinusoidally modulated width.While integrated LPG architectures typ-ically achieve ultrahigh sensitivity only over a narrow optical bandwidth using a phase-matching turning-point optimization technique,our sensor exhibits a very high refractometric sensitivity that was designed to remain constant over a broad operational optical spectral bandwidth.The proposed design method relies on multi-modal dispersion tailoring that consists of homogenizing the spectral behaviors of both group and effective indices of the coupling modes.Experimental results are in agreement with numerical simulations,demonstrating not only a sensitivity reaching 11,500 nm/RIU but,more significantly,also that this sensitivity remains almost constant over a broad spectral range of at least 100 nm around 1550 nm.Additional advantages of the proposed sensor archi-tecture encompass a low temperature sensitivity,down to-0.15 nm/K,and simplicity of the fabrication process.These results demonstrate the feasibility of chip-scale photonic integration to achieve both high sensitivity and large dynamic range of the proposed refractometer.
文献关键词：
中图分类号：
作者姓名：
CLEMENT DELEAU;HAN CHENG SEAT;OLIVIER BERNAL;FREDERIC SURRE
作者机构：
LAAS-CNRS,Université de Toulouse,CNRS,INP,Toulouse,France;James Watt School of Engineering,University of Glasgow,Glasgow,UK
文献出处：
引用格式：
[1]CLEMENT DELEAU;HAN CHENG SEAT;OLIVIER BERNAL;FREDERIC SURRE-.High-sensitivity integrated SiN rib-waveguide long period grating refractometer)[J].光子学研究（英文）,2022(02):564-573
A类：
refractometer,refractometric,homogenizing
B类：
High,sensitivity,integrated,SiN,rib,waveguide,long,period,grating,In,this,research,we,demonstrate,silicon,nitride,LPG,sinusoidally,modulated,While,architectures,typ,ically,achieve,ultrahigh,only,over,narrow,optical,bandwidth,using,phase,matching,turning,point,optimization,technique,our,sensor,exhibits,very,that,was,designed,constant,broad,operational,spectral,proposed,method,relies,multi,modal,dispersion,tailoring,consists,behaviors,both,group,effective,indices,coupling,modes,Experimental,results,are,agreement,numerical,simulations,demonstrating,not,reaching,RIU,but,more,significantly,also,remains,almost,range,least,around,Additional,advantages,encompass,low,temperature,down,simplicity,fabrication,process,These,feasibility,chip,scale,photonic,integration,large,dynamic
AB值：
0.597902
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