ANALYTICAL CALCULATION OF BAND GAP OF A 1D PLANAR TERNARY PHOTONIC CRYSTAL BY SIMULATING WITH A SYMMETRIC LOSSLESS TRANSMISSION LINE

2012 ◽  
Vol 28 ◽  
pp. 101-109 ◽  
Author(s):  
Abdolrasoul Gharaati ◽  
Alireza Serajfard
Keyword(s):  
Photonic Crystal ◽  
Transmission Line ◽  
Band Gap ◽  
Analytical Calculation ◽  
Ternary Photonic Crystal

Extension of energy band gap in ternary photonic crystal using left-handed materials

2018 ◽  
Vol 120 ◽  
pp. 353-362 ◽  
Author(s):  
Dena M. El-Amassi ◽  
Sofyan A. Taya ◽  
Nambi R. Ramanujam ◽  
Dhasarathan Vigneswaran ◽  
R. Udaiyakumar
Keyword(s):  
Photonic Crystal ◽  
Band Gap ◽  
Energy Band ◽  
Energy Band Gap ◽  
Left Handed ◽  
Ternary Photonic Crystal

scholarly journals Band-Gap Solitons in Nonlinear Photonic Crystal Waveguides and Their Application for Functional All-Optical Logic Gating

Photonics ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 250
Author(s):  
Vakhtang Jandieri ◽  
Ramaz Khomeriki ◽  
Tornike Onoprishvili ◽  
Daniel Erni ◽  
Levan Chotorlishvili ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Band Gap ◽  
Crystalline Silicon ◽  
Logic Gates ◽  
Photonic Crystal Waveguides ◽  
Optical Logic ◽  
Logical Operation ◽  
Pulse Envelope ◽  
Gap Soliton ◽  
All Optical

This review paper summarizes our previous findings regarding propagation characteristics of band-gap temporal solitons in photonic crystal waveguides with Kerr-type nonlinearity and a realization of functional and easily scalable all-optical NOT, AND and NAND logic gates. The proposed structure consists of a planar air-hole type photonic crystal in crystalline silicon as the nonlinear background material. A main advantage of proposing the gap-soliton as a signal carrier is that, by operating in the true time-domain, the temporal soliton maintains a stable pulse envelope during each logical operation. Hence, multiple concatenated all-optical logic gates can be easily realized paving the way to multiple-input ultrafast full-optical digital signal processing. In the suggested setup, due to the gap-soliton features, there is no need to amplify the output signal after each operation which can be directly used as a new input signal for another logical operation. The efficiency of the proposed logic gates as well as their scalability is validated using our original rigorous theoretical formalism confirmed by full-wave computational electromagnetics.

scholarly journals Characteristic Analysis and Structural Design of Hollow-Core Photonic Crystal Fibers with Band Gap Cladding Structures

Sensors ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 284
Author(s):  
Bowei Wan ◽  
Lianqing Zhu ◽  
Xin Ma ◽  
Tianshu Li ◽  
Jian Zhang
Keyword(s):  
Photonic Crystal ◽  
Band Gap ◽  
Photonic Crystal Fibers ◽  
Relative Sensitivity ◽  
Confinement Loss ◽  
Hollow Core ◽  
Characteristic Analysis ◽  
Element Analysis ◽  
The Core ◽  
Crystal Fibers

Due to their flexible structure and excellent optical characteristics hollow-core photonic crystal fibers (HC-PCFs) are used in many fields, such as active optical devices, communications, and optical fiber sensing. In this paper, to analyze the characteristics of HC-PCFs, we carried out finite element analysis and analyzed the design for the band gap cladding structure of HC-PCFs. First, the characteristics of HC19-1550 and HC-1550-02 in the C-band were simulated. Subsequently, the structural optimization of the seven-cell HC-1550-02 and variations in characteristics of the optimized HC-1550-02 in the wavelength range 1250–1850 nm were investigated. The simulation results revealed that the optimal number of cladding layers is eight, the optimal core radius is 1.8 times the spacing of adjacent air holes, and the optimal-relative thickness of the core quartz-ring is 2.0. In addition, the low confinement loss bandwidth of the optimized structure is 225 nm. Under the transmission bandwidth of the optimized structure, the core optical power is above 98%, the confinement loss is below 9.0 × 10−3 dB/m, the variation range of the effective mode field area does not exceed 10 μm2, and the relative sensitivity is above 0.9570. The designed sensor exhibits an ultra-high relative sensitivity and almost zero confinement loss, making it highly suitable for high-sensitivity gas or liquid sensing.

Omnidirectional photonic band gap in magnetron sputtered TiO2/SiO2 one dimensional photonic crystal

2016 ◽  
Vol 599 ◽  
pp. 138-144 ◽  
Author(s):  
S. Jena ◽  
R.B. Tokas ◽  
P. Sarkar ◽  
J.S. Misal ◽  
S. Maidul Haque ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Band Gap ◽  
Photonic Band Gap ◽  
One Dimensional ◽  
Dimensional Photonic Crystal ◽  
Omnidirectional Photonic Band Gap ◽  
Photonic Band
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