A squeezed photonic crystal fiber for residual dispersion compensation with high birefringence over S+C+L+U wavelength bands

2020 ◽  
Vol 458 ◽  
pp. 124757 ◽  
Author(s):  
Chunyang Sun ◽  
Weicheng Wang ◽  
Hongzhi Jia
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Dispersion Compensation ◽  
High Birefringence ◽  
Crystal Fiber

High birefringence and broadband dispersion compensation photonic crystal fiber

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Md. Mahbub Hossain ◽  
Md. Shamim Ahsan ◽  
Niloy Sikder ◽  
Md. Ekhlasur Rahaman ◽  
Abdullah Al-Mamun Bulbul ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Wavelength Division Multiplexing ◽  
Dispersion Compensation ◽  
Wide Band ◽  
Square Lattice ◽  
Relative Dispersion ◽  
Dispersion Slope ◽  
High Birefringence ◽  
Crystal Fiber

AbstractWe propose a perfectly square lattice photonic crystal fiber (PCF) which shows high birefringence and negative dispersion. To set up high asymmetry in the core, dual line imperfection is considered where the fill fraction ratio and defect air hole diameter exhibit significant impact on dispersion and birefringence. Numerical analyses of guiding properties of the proposed PCF are done using finite element method with perfectly matched layer boundary condition from 1.2 to 1.8 μm wavelength. The optimized square lattice PCF presents high birefringence of 2.48 × 10−2 and dispersion of −777.66 (ps/nm.km) at 1.55 μm wavelength. In addition, the proposed PCF offers ultra-low confinement and insertion loss at 1.55 μm wavelength. Moreover, −0.45 (ps/nm2.km) dispersion slope and 0.0045 nm−1 relative dispersion slope are observed at 1.55 μm wavelength. Additionally, the proposed PCF maintains dispersion and birefringence variation of ±30 (ps/nm.km) and ±0.00001 between 1.5 and 1.6 μm wavelength ranges, respectively. Furthermore, the proposed PCF shows high quality factor and low bit error rate at 10 dBm input power. We believe the proposed square lattice PCF can be deployed in wavelength division multiplexing based optical fiber transmission system for wide-band dispersion compensation.

Proposed Square Lattice Photonic Crystal Fiber for Extremely High Nonlinearity, Birefringence and Ultra-High Negative Dispersion Compensation

2019 ◽  
Vol 40 (4) ◽  
pp. 401-410 ◽  
Author(s):  
Md. Ibadul Islam ◽  
Kawsar Ahmed ◽  
Shuvo Sen ◽  
Bikash Kumar Paul ◽  
Md. Shadidul Islam ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Dispersion Compensation ◽  
Chromatic Dispersion ◽  
Single Mode ◽  
Square Lattice ◽  
Geometrical Properties ◽  
High Birefringence ◽  
Crystal Fiber ◽  
Negative Dispersion

Abstract A photonic crystal fiber in square lattice architecture is numerically investigated and proposed for broadband dispersion compensation in optical transmission system. Simulation results reveal that it is possible to obtain an ultra-high negative dispersion of about −571.7 to −1889.7 (ps/nm.km) in the wavelength range of 1340 nm to 1640 nm. Experimentally it is demonstrated that the design fiber covers a high birefringence of order 4.74×10‒3 at the wavelength of 1550 nm. Here, numerical investigation of guiding properties and geometrical properties of the proposed PCF are conducted using the finite element method (FEM) with perfectly match layers. Moreover, it is established more firmly that the proposed fiber successfully compensates the chromatic dispersion of standard single mode in entire band of interest. Our result is attractive due to successfully achieve ultra-high negative dispersion that is more promisor than the prior best results.

scholarly journals Highly Nonlinear and Birefringent Spiral Photonic Crystal Fiber

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
S. Revathi ◽  
Srinivasa Rao Inbathini ◽  
Rizwan Ali Saifudeen
Keyword(s):  
Finite Element Method ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Dispersion Compensation ◽  
Numerical Approach ◽  
High Birefringence ◽  
Polarization Control ◽  
Crystal Fiber ◽  
Negative Dispersion ◽  
Highly Nonlinear

We propose and design a spiral photonic crystal fiber with elliptical air holes for achieving high birefringence, large nonlinearity, and negative dispersion. The structure is designed using chalcogenide glass (As2S3) for different ellipticity ratios of air holes in the cladding and the effect on various properties is observed. The proposed structure has birefringence of the order 10−2, nonlinearity of 26739.42 W−1 m−1, and dispersion of −1136.69 at 0.85 μm. An accurate numerical approach based on finite element method is used for the design and simulation of the structure. Due to high birefringence and negative dispersion, the proposed structure can be used for polarization control and dispersion compensation, respectively.

Characteristics Analysis of Photonic Crystal Fiber with Hexagonal and Octagonal Structure

2011 ◽  
Vol 148-149 ◽  
pp. 326-330
Author(s):  
Wei Wang ◽  
Bo Yang ◽  
Yue Fan ◽  
Hong Ru Song
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Communication Systems ◽  
High Performance ◽  
Dispersion Compensation ◽  
High Birefringence ◽  
Crystal Fiber ◽  
Optical Communication Systems ◽  
Characteristics Analysis ◽  
New Type

Aiming at the requirements of high performance of optical communication systems, a new type of photonic crystal fiber (PCF) is proposed. This kind of PCF consists of hexagonal air holes in the inner cladding and octagonal air holes in the others layers. Two big elliptical air holes are embedded to enhance the birefringence. Numeral results show that this kind of PCF exhibits high birefringence with the level of 10-3 and high nonlinearity with the level of 10-2m-1w-1. In addition, two zero dispersion points are obtained after optimization, which will find application in dispersion compensation PCFs.

scholarly journals A Highly Birefringent Photonic Crystal Fiber for Terahertz Spectroscopic Chemical Sensing

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1799
Author(s):  
Tianyu Yang ◽  
Liang Zhang ◽  
Yunjie Shi ◽  
Shidi Liu ◽  
Yuming Dong
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Chemical Sensing ◽  
Numerical Aperture ◽  
Wide Band ◽  
Relative Sensitivity ◽  
Chemical Sensitivity ◽  
High Birefringence ◽  
Crystal Fiber ◽  
Polarization Maintaining

A photonic crystal fiber (PCF) with high relative sensitivity was designed and investigated for the detection of chemical analytes in the terahertz (THz) regime. To ease the complexity, an extremely simple cladding employing four struts is adopted, which forms a rectangular shaped core area for filling with analytes. Results of enormous simulations indicate that a minimum 87.8% relative chemical sensitivity with low confinement and effective material absorption losses can be obtained for any kind of analyte, e.g., HCN (1.26), water (1.33), ethanol (1.35), KCN (1.41), or cocaine (1.50), whose refractive index falls in the range of 1.2 to 1.5. Besides, the PCF can also achieve high birefringence (∼0.01), low and flat dispersion, a large effective modal area, and a large numerical aperture within the investigated frequency range from 0.5 to 1.5 THz. We believe that the proposed PCF can be applied to chemical sensing of liquid and THz systems requiring wide-band polarization-maintaining transmission and low attenuation.

Nonlinear photonic crystal fiber with high birefringence made of silicate glass

2006 ◽  
Author(s):  
Przemyslaw Szarniak ◽  
Matteo Foroni ◽  
Ryszard Buczynski ◽  
Dariusz Pysz ◽  
Piotr Wasylczyk ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Silicate Glass ◽  
High Birefringence ◽  
Crystal Fiber ◽  
Nonlinear Photonic Crystal

scholarly journals A Highly Sensitive, Polarization Maintaining Photonic Crystal Fiber Sensor Operating in the THz Regime

Photonics ◽  
2018 ◽  
Vol 5 (4) ◽  
pp. 40 ◽  
Author(s):  
Sohel Rana ◽  
Nirmala Kandadai ◽  
Harish Subbaraman
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
High Sensitivity ◽  
Relative Sensitivity ◽  
Computational Technique ◽  
The Finite Element Method ◽  
High Birefringence ◽  
Crystal Fiber ◽  
Highly Sensitive ◽  
Imaging And Spectroscopy

In this paper, a high sensitivity, polarization preserving photonic crystal fiber (PCF), based on circular air holes for sensing in the terahertz (THz) band, is presented. The finite element method, a practical and precise computational technique for describing the interactions between light and matter, is used to compute the modal properties of the designed fiber. For the designed PCF, comprising of circular air holes in both the cladding and in the porous core, a relative sensitivity of 73.5% and a high birefringence of 0.013 are achieved at 1.6 THz. The all circular air-hole structure, owing to its simplicity and compatibility with the current fiber draw technique for PCF fabrication, can be realized practically. It is anticipated that the designed fiber can be employed in applications such as detection of biological samples and toxic chemicals, imaging, and spectroscopy.

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