Design of metallic nanocylinder array waveguide for controlling resonant wavelength shift

Microring resonators (MRRs) is a compact and multi-functioned device which is mainly characterized by free spectral range (FSR) and quality factor (Q-factor). In this paper, the influence of glucose concentration to the resonant wavelength shift of MRRs is presented. The calculation was carried out using semi-numerical method for different values of FSR and Q-factor. The parameters used in the calculation including incident wavelength, ring radii of circular waveguide, gap sizes between circular and straight waveguides, the dimension of both waveguides, and refractive index of polymer, SiO2 and glucoce solution. The results show that glucose affects the resonant wavelength shift for each values of FSR and Q-factor. The increase of the glucose concentration causes the increase of the resonant wavelength shift, therefore this polymer-based MRR’s can be used for glucose sensing application.

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One factor of resonant wavelength shift from onewavelength to two-wavelength resonance in loop-tube-type thermoacoustic cooling system

10.1063/1.3703263 ◽

2012 ◽

Cited By ~ 1

Author(s):

Shin-ichi Sakamoto ◽

Kenji Shibata ◽

Yuji Kitadani ◽

Yoshitaka Inui ◽

Yoshiaki Watanabe

Keyword(s):

Cooling System ◽

Resonant Wavelength ◽

Wavelength Shift ◽

Tube Type ◽

Resonant Wavelength Shift

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Ultra sensitive Bio-Chemical sensors Based on Optical Resonance

MRS Proceedings ◽

10.1557/proc-0890-y06-05 ◽

2005 ◽

Vol 890 ◽

Author(s):

Shalini Prasad

Keyword(s):

Chemical Sensors ◽

Aqueous Media ◽

Ring Structure ◽

Resonant Wavelength ◽

Wavelength Shift ◽

Optical Resonance ◽

High Q ◽

Cavity Structure ◽

In Situ Detection ◽

Micro Cavity

ABSTRACTWith the focus on bio terrorism and environmental sensing, there is need for development of smart integrated bio-chemical sensors. We investigate Whispering Gallery Mode (WGM) based High Q micro cavity as a biosensor. We integrate the lab-on-a-chip approach with High Q technology to develop highly selective and smart sensors for in-situ detection of aqueous media based agents. We have investigated the ring based micro-cavity structure as a sensor. We identify the detection of agent through the changes observed in the wavelength shift and Q factor as a result of enzyme-substrate interactions. We report an experimental demonstration of a compact micro-cavity based biochemical sensor based on the micro ring structure. The micro-cavity, fabricated on a silica-on-silicon substrate, is designed to have a resonant wavelength (l) near 1.34 μm. The transmission spectrum of the sensor is measured with different ambient refractive indices ranging from n =1.0 to 1.5. Chemical detection was achieved by measuring the shift in resonant wavelength, and variation to the quality factor

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MICROFIBER STRUCTURES FOR SENSOR APPLICATIONS

Journal of Nonlinear Optical Physics & Materials ◽

10.1142/s0218863512500038 ◽

2012 ◽

Vol 21 (01) ◽

pp. 1250003 ◽

Cited By ~ 2

Author(s):

S. W. HARUN ◽

K. S. LIM ◽

H. AHMAD

Keyword(s):

Refractive Index ◽

Electric Current ◽

Copper Wire ◽

Extinction Ratio ◽

Resonant Wavelength ◽

Wavelength Shift ◽

Thermally Induced ◽

Sensor Applications ◽

Induced Changes ◽

Ratio Reduction

Microfiber loop resonator (MLR) and microfiber knot resonator (MKR) are fabricated using melt-stretching method for applications in temperature and current sensor, respectively. The MLR is embedded into low refractive index polymer for robustness. Although the spacing of the transmission comb spectrum of the MLR is unchanged with temperature, the extinction ratio of the spectrum is observed to decrease linearly with temperature due to induced changes in the material's refractive index. The slope of the extinction ratio reduction against temperature is about 0.043dB/°C. With the assistance of a copper wire that is wrapped by the MKR, resonant wavelength can be tuned by varying the electric current delivered to the wire. The resonant wavelength change is based on the thermally induced optical phase shift in the MKR due to the heat produced by the flow of electric current over a short transit length. It is shown that the wavelength shift is linearly proportional to the square of current in the copper wire with a tuning slope of 46 pm/A2.

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Design and Simulation of Temperature Sensor based on Long Period Grating in Liquid Filled Photonic Crystal Fiber

Advanced Electromagnetics ◽

10.7716/aem.v7i3.477 ◽

2018 ◽

Vol 7 (3) ◽

pp. 11-16

Author(s):

R. Boufenar ◽

M. Bouamar ◽

A. Hocini

Keyword(s):

Photonic Crystal ◽

Photonic Crystal Fiber ◽

Temperature Sensor ◽

High Sensitivity ◽

Resonant Wavelength ◽

Wavelength Shift ◽

Long Period Grating ◽

Crystal Fiber ◽

Long Period ◽

Vector Finite Element

In this paper, a high sensitivity temperature sensor based on photonic crystal fiber long period grating (PCF-LPG) filled with ethanol is proposed and simulated by full vector finite element method. The relationship between the resonant wavelength shift, and the temperature was analyzed. The results show that the resonant wavelength of the ethanol filled photonic crystal fiber long period grating is proportional linearly with temperature and the highest sensitivity of was achieved, which is 90 times higher than that of conventional LPG temperature sensors.

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Discriminating Measurement of Temperature and Strain by Using Long Period Grating’s Spectra

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.614-615.1427 ◽

2012 ◽

Vol 614-615 ◽

pp. 1427-1432

Author(s):

Zhao Ping Yuan

Keyword(s):

Resonant Wavelength ◽

Wavelength Shift ◽

Fiber Grating ◽

Strain Sensitivity ◽

Loss Peak ◽

Third Order ◽

Long Period ◽

Variation Range ◽

Set Up ◽

Period Fiber Grating

Discriminating measurement of strain and temperature is demonstrated by using a long period fiber grating according to its spectrum characteristics. The resonant wavelength of the first and third-order loss peak is selected, and temperature and strain sensitivity of each resonant wavelength are experimented. The self-wavelength shift resulting from parameter variation can be obtained by observing its corresponding spectrum. The temperature and strain sensitivity are calibrated. Both wavelengths have good linear response of temperature and strain in a certain variation range. Then, slandered matrix equation is set up and solved according to the corresponding parameter. Experimental results show root mean square deviation of ±16με and ±0.62°C for strain and temperature, respectively. This method can realize discriminating measurement of strain and temperature avoiding cross sensitivity. System accuracy is also improved efficiently.

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