Design and analysis of all optical biochemical sensors based on the coupled-ring reflectors

Sensor Review ◽  
2019 ◽  
Vol 39 (6) ◽  
pp. 857-861
Author(s):  
Sahar Feili ◽  
H.R. Sabouhi ◽  
Hassan Sobhani ◽  
M. Traz
Keyword(s):  
Low Power ◽  
Line Shape ◽  
Fano Resonance ◽  
Resonance Line ◽  
Optical Switching ◽  
High Sensitivity ◽  
Optical Biosensor ◽  
Content Type ◽  
Two Agents ◽  
Fabry Perot

Purpose This study aims to propose a new scheme for designing a high-sensitivity optical biosensor. For this, two agents have been considered: reflection-type micro-resonators, which filter the noise of the pump, and coupled-ring reflectors (CRRs), which are coupled to partial reflecting elements in the bus waveguide to create Fano-resonance. These two agents improve the sensor sensitivity and have low-power optical switching/modulation. Design/methodology/approach The proposed model is based on the coupling of the CRRs with the Fabry–Pérot cavity. The slope of the Fano-resonance line shape and consequently the sensitivity of the proposed CRRs are higher than those of conventional microring resonators. Findings The proposed scheme has many characteristics: CRRs have been used to create a higher slope of the Fano-resonance line shape; the sensitivity of the sensor shows improvement on the basis of reflection-type micro-resonators and by the removal of the pump noise; the designed sensor has low-power optical switching/modulation; and the modeling and designing of a novel high-sensitivity resonator is based on coupling the CRRs with the Fabry–Pérot cavity. Originality/value This study has proposed a new scheme for designing a high-sensitivity optical biosensor. This method is based on the improvement of the sensitivity by two agents: reflection-type micro-resonators, which filter the noise of the pump, and coupled-ring reflectors, which are coupled to partial reflecting elements in the bus waveguide to create Fano-resonance.

scholarly journals High Sensitivity Plasmonic Sensor Based on Fano Resonance with Inverted U-Shaped Resonator

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1164
Author(s):  
Gongli Xiao ◽  
Yanping Xu ◽  
Hongyan Yang ◽  
Zetao Ou ◽  
Jianyun Chen ◽  
...  
Keyword(s):  
Fano Resonance ◽  
Figure Of Merit ◽  
High Sensitivity ◽  
Refractive Index Sensor ◽  
Multimode Interference ◽  
Geometrical Parameters ◽  
The Finite Element Method ◽  
Plasmonic Sensor ◽  
Coupled Mode ◽  
Plasmonic Nanosensor

Herein, we propose a tunable plasmonic sensor with Fano resonators in an inverted U-shaped resonator. By manipulating the sharp asymmetric Fano resonance peaks, a high-sensitivity refractive index sensor can be realized. Using the multimode interference coupled-mode theory and the finite element method, we numerically simulate the influences of geometrical parameters on the plasmonic sensor. Optimizing the structure parameters, we can achieve a high plasmonic sensor with the maximum sensitivity for 840 nm/RIUand figure of merit for 3.9 × 105. The research results provide a reliable theoretical basis for designing high sensitivity to the next generation plasmonic nanosensor.

scholarly journals Nonlinear dynamics in the resonance line shape ofNbNsuperconducting resonators

2006 ◽  
Vol 73 (13) ◽  
Author(s):  
B. Abdo ◽  
E. Segev ◽  
O. Shtempluck ◽  
E. Buks
Keyword(s):  
Nonlinear Dynamics ◽  
Line Shape ◽  
Resonance Line

Low Power and High Sensitivity MOSFET-Based Pressure Sensor

2012 ◽  
Vol 29 (8) ◽  
pp. 088501 ◽  
Author(s):  
Zhao-Hua Zhang ◽  
Tian-Ling Ren ◽  
Yan-Hong Zhang ◽  
Rui-Rui Han ◽  
Li-Tian Liu
Keyword(s):  
Low Power ◽  
Pressure Sensor ◽  
High Sensitivity

Project, programme and portfolio maturity: a case study of Australian Federal Government

2014 ◽  
Vol 7 (2) ◽  
pp. 215-230 ◽  
Author(s):  
Michael Young ◽  
Raymond Young ◽  
Julio Romero Zapata
Keyword(s):  
Federal Government ◽  
Management Practices ◽  
Stakeholder Management ◽  
High Sensitivity ◽  
Development Planning ◽  
Government Agencies ◽  
Maturity Model ◽  
Australian Government ◽  
Content Type ◽  
Management Processes

Purpose – This paper aims to examine the notion of maturity assessment and maturity models more broadly and goes on to examine the findings from the assessments of project, programme and portfolio maturity undertaken across Australian Government agencies. Design/methodology/approach – A statistical analysis was performed to determine the level of maturity that best represents the Australian Federal Government agencies as a whole. The unit of analysis in this study is the agencies overall scores in each sub-model across the seven perspectives of the portfolio, programme and project management maturity model (P3M3) maturity model. Findings – This study has identified a number of interesting findings. First, the practices of project, programme and portfolio across the dataset practiced independently of each other. Second, benefits management and strategy alignment practices are generally poor across Australian Government agencies. Third, programme management practices are the most immature. Finally, the results showed a high sensitivity to the “generic attributes” of roles and responsibilities, experience, capability development, planning and estimating and scrutiny and review. Research limitations/implications – All data used in this analysis are secondary data collected from individual Australian Government agencies. The data were collected by accredited consultants following a common data collection method and using a standard template to ensure a consistent approach. Practical implications – The study poses some implications for practice, particularly given the context of Australian Federal Government agencies current plans and action to improve organisational maturity. The study suggests that benefits management processes at the project level and benefits management, governance and stakeholder management processes at the programme level should be an area of focus for improvement. Originality/value – This study is the first attempt to systematically review the data collected through such an assessment and in particular identify the findings and the implications at a whole of government level.

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