Contribution of Strain and Elasto-Optical Effect to Resonant Mode in the Two-Dimensional Photonic Crystals Force Sensor

2011 ◽  
Vol 216 ◽  
pp. 148-152 ◽  
Author(s):  
Yan Li ◽  
Hai Wei Fu ◽  
Xiao Li Li ◽  
Min Shao
Keyword(s):  
Finite Difference Time Domain ◽  
Resonant Cavity ◽  
Force Sensor ◽  
Resonant Mode ◽  
Resonant Wavelength ◽  
Two Dimensional ◽  
Optical Effect ◽  
Sensor Model ◽  
Two Dimensional Photonic Crystal ◽  
Difference Time

The resonant wavelength of the two-dimensional photonic crystal force sensor model changing with normal stress along y direction is calculated by finite-difference time-domain method. The result shows that the variation of the size and shape of the resonant cavity has a main contribution to the variation of the resonant wavelength. The elasto-optical effect of GaAs medium can not obviously change the wavelength of the resonant cavity below score of megapascal.

scholarly journals A novel proposal based on 2D linear resonant cavity photonic crystals for all-optical NOT, XOR and XNOR logic gates

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Kouddad Elhachemi ◽  
Naoum Rafah
Keyword(s):  
Finite Difference Time Domain ◽  
Resonant Cavity ◽  
Logic Gates ◽  
Low Power Consumption ◽  
Plane Wave Expansion ◽  
Novel Structure ◽  
All Optical ◽  
Easy Integration ◽  
Two Dimensional Photonic Crystal ◽  
Difference Time

AbstractIn this paper, we are going to propose a novel structure of all-optical NOT, XOR and XNOR logic gates are presented using a two-dimensional photonic crystal (2D-PhC). This structure is optimized by varying the radius of the cavity, to obtain a quality factor Q = 1192, and also has several ports of entry and one port of output. The size of each structure is equal to 85.8 μm2. The contrast ratios for the structures proposed all-optical NOT, XOR and XNOR logic gates between levels “0” and “1” are, respectively, 25.08, 25.03, and 14.47 dB. The response time for the three logical gates is 8.33 ps, and the bit rate is calculated at about 0.12 Tbit/s, all simulations are based on both numerical methods such as finite difference time domain (FDTD) and plane wave expansion (PWE). Designed logic gates are characterized by low power consumption, compactness and easy integration.

Investigation on Two-Dimensional Photonic Crystal Self-Collimation Splitting Sensor

2010 ◽  
Vol 428-429 ◽  
pp. 367-371
Author(s):  
Yu Fei Wang ◽  
Guo Zhong Lai ◽  
Jian Feng Zhang ◽  
Fu Zhong Lin ◽  
Xiong Liang ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Two Dimensional ◽  
Trade Off ◽  
Optical Detector ◽  
Reflected Light ◽  
Calculation Results ◽  
Two Dimensional Photonic Crystal ◽  
Difference Time

A self-collimation splitting sensor truncated in a two-dimensional (2D) photonic crystal has been proposed and demonstrated theoretically. Intensity of transmitted light and reflected light, which varies with the width of the splitter, is detected at two output ports. Calculation results validated by the 2D finite-difference time-domain technique show that with the increase of width, the transmittivity decreases while the reflectivity increases and their summation decreases. Considering the trade-off between the sensitivity of the optical detector and the loss of power, including the difficulty of fabrication, the width of 0.4a is meet for the sensor. The simulated relative intensity monotonously increases from 1.63 to 2.94 nonlinearly.

An Optical Power Divider Based on Two-dimensional Photonic Crystal Structure

2017 ◽  
Vol 38 (2) ◽  
Author(s):  
Nazanin Mesri ◽  
Hamed Alipour-Banaei
Keyword(s):  
Photonic Crystal ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Optical Power ◽  
Power Divider ◽  
Two Dimensional ◽  
Plane Wave Expansion ◽  
Dimensional Photonic Crystal ◽  
Two Dimensional Photonic Crystal ◽  
Difference Time

AbstractIn this paper, an optical power divider with one input and four outputs has been proposed in a two-dimensional photonic crystal with triangular lattice and simulated using dielectric holes in an air substrate. The dividing properties of the power divider have been numerically simulated and analyzed using the plane wave expansion and finite difference time domain methods. The results show that the transmittance of this divider can be as high as 94.22 % for

Design of a new two-dimensional optical biosensor using photonic crystal waveguides and a nanocavity

2016 ◽  
Vol 5 (1) ◽  
Author(s):  
Hamideh Mohsenirad ◽  
Saeed Olyaee ◽  
Mahmood Seifouri
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Point Defects ◽  
Finite Difference Time Domain ◽  
Optical Biosensor ◽  
Two Dimensional ◽  
Plane Wave Expansion ◽  
Photonic Crystal Waveguides ◽  
Two Dimensional Photonic Crystal ◽  
Difference Time

AbstractIn this paper, a two-dimensional photonic crystal biosensor for medical applications based on two waveguides and a nanocavity is presented. The waveguides and nanocavity are created by introducing line and point defects into a photonic crystal, respectively. It could be shown that by injecting an analyte into a sensing hole, and thus changing its refractive index, may shift the resonant wavelength. The proposed structure is designed for the wavelength range of 1.5259–1.6934 μm. Sensitivity, the most important biosensor parameter, was studied and found to be approximately equal to 83.75 nm/refractive index units (RIU). An important specification of this structure is its very small dimensions. Two-dimensional finite-difference time domain and plane-wave expansion methods were used for both to simulate the proposed structure and to obtain the band diagrams.

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