Highly negative dispersion compensating fiber with low third order dispersion

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Md. Ibadul Islam ◽  
Md Saiful Islam
Keyword(s):  
Group Velocity Dispersion ◽  
Chromatic Dispersion ◽  
Third Order ◽  
Crystal Fiber ◽  
Negative Dispersion ◽  
Third Order Dispersion ◽  
Sensing Applications ◽  
Effective Mode Area ◽  
Mode Area ◽  
Order Dispersion

AbstractIn this work, a dispersion compensating photonic crystal fiber (DC-PCF) is proposed in which dispersion, dispersion slope, second order dispersion, third order dispersion, nonlinearity, effective mode area, V parameter are investigated. The suggested structure is very effective for compensating of chromatic dispersion about −951 to −3075.10 ps/(nm.km) over 1340–1640 nm wavelength bandwidth. With perfectly matched layer boundary condition, guiding properties are inspected applying finite element method (FEM). The investigated results conform the opportunity of large negative dispersion and high group velocity dispersion (GVD) of −2367.10 ps/(nm.km) and 3018.55 ps2/km respectively, at 1550 nm operating wavelength. The offered fiber also shows low third order dispersion about −637.88 ps3/km, high nonlinearity of 91.11 W−1 km−1. From overall simulation results, it can be expected that the suggested PCF will be an effective candidate in high bit rate long haul optical communication system as well as sensing applications.

Silicon Nanowire Embedded Spiral Photonic Crystal Fiber for Soliton-Effect Pulse Compression

2014 ◽  
Vol 938 ◽  
pp. 316-321
Author(s):  
E. Gunasundari ◽  
K. Senthilnathan ◽  
S. Sivabalan ◽  
K. Nakkeeran ◽  
P. Ramesh Babu
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Pulse Compression ◽  
Velocity Dispersion ◽  
Group Velocity Dispersion ◽  
Silicon Nanowire ◽  
Third Order ◽  
Crystal Fiber ◽  
Third Order Dispersion ◽  
Order Dispersion

In this paper, we propose a new type of optical waveguide called silicon nanowire embedded equai-angular spiral photonic crystal fiber (SN-SPCF) using fully vectorial finite element method, where closely arranged arrays of air holes act as cladding and nanosize silicon material at the centre acts as core. We show that the proposed nanowire embedded PCF of 400 nm core diameter exhibits high anomalous group velocity dispersion (-3148 ps2/km), small third order dispersion (-8.6591 ps3/km) and high nonlinearity (443.2 W-1m-1) at 1550 nm wavelength. Soliton-effect pulse compression of femtosecond pulses in a silicon nanowire-spiral photonic crystal fiber at 1550 nm is numerically studied. We demonstrate a pulse compression of 75 fs input pulse to about 4 fs by the simultaneous actions of both linear effects (a large anomalous group velocity dispersion and a small third order dispersion) and the nonlinear effect (an effective high nonlinearity).

A New Design of Photonic Crystal Fiber with Fattened Dispersion and Low Effective Mode Area

2012 ◽  
Vol 535-537 ◽  
pp. 1304-1307
Author(s):  
Di Li ◽  
Qiang Xu ◽  
Du Qi Yuan ◽  
Xu Chao Duan
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Chromatic Dispersion ◽  
Optical Systems ◽  
Perfectly Matched Layers ◽  
Nonlinearity Coefficient ◽  
Crystal Fiber ◽  
Dispersion Compensator ◽  
Effective Mode Area ◽  
Mode Area

We propose a novel type of photonic crystal fiber with low fattened dispersion and high nonlinearity for four wave mixing. The dispersion and nonlinearity coefficient are investigated simultaneously by using the full vectorial finite element method with anisotropic perfectly matched layers. The optimized result has been obtained by adjusting the design parameter of the proposed fiber, which has dispersion is -1.53 ps•nm−1 km−1 at wavelength of 1.55μm, and in addition the relatively small effective mode area of 2.23μm2 is obtained at the same wavelength, which will induce higher nonlinearity coefficient is close 54.8 W-1• km-1 at the wavelength of 1.55μm. The proposed PCF is suitable for applications as a chromatic dispersion controller, dispersion compensator, or as candidate for the nonlinear optical systems because of its small effective mode area.

scholarly journals Feature Properties of Photonic Crystal Fiber with Hollow Core Filled Nitrobenzene

2020 ◽  
Vol 30 (4) ◽  
pp. 331
Author(s):  
Vu Tran Quoc ◽  
Trang Chu Thi Gia ◽  
Minh Le Van ◽  
Thuy Nguyen Thi ◽  
Phuong Nguyen Thi Hong ◽  
...  
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Chromatic Dispersion ◽  
Confinement Loss ◽  
Hollow Core ◽  
Lattice Constants ◽  
Crystal Fiber ◽  
Effective Mode Area ◽  
Mode Area

In this paper, a photonic crystal fiber (PCF) with core infiltrated with Nitrobenzene is proposed and investigated. Its feature properties as the effective refractive index, effective mode area, chromatic dispersion, and confinement loss have been numerically simulated. The obtained results show that characteristic quantities of PCF with core infiltrated with Nitrobenzene (PCF-N) having some advantages in comparison to PCF with core infiltrated with Toluene (PCF-T) at 1.55μm wavelength. For the purpose of supercontinuum generation, two optimal structures with lattice constants 2.0μm and 2.5μm with filling factors d/Ʌ = 0.3 are identified.

scholarly journals Numerical study of few-cycle pulses generation from supercontinuum in ANDi-PCF

2013 ◽  
Vol 23 ◽  
pp. 40-44 ◽  
Author(s):  
O. Shulika ◽  
I. Sukhoivanov ◽  
S. Iakushev ◽  
I. Guryev ◽  
J. Andrade Lucio ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Numerical Study ◽  
Supercontinuum Generation ◽  
Third Order ◽  
Normal Dispersion ◽  
Pump Pulse Energy ◽  
Crystal Fiber ◽  
Third Order Dispersion ◽  
Order Dispersion

This paper presents the design of all-normal dispersion photonic-crystal fiber optimized for pulse-preserving supercontinuum generation near 800 nm. The supercontinuum generation is analyzed numerically addressing the role of pump pulse energy and the pump wavelength deviation from the zeroth point of third-order dispersion. We have also shown that supercontinuum generated in designed ANDi-PCF from a few nanojoule 100 fs pulses can be efficiently compressed down to a sub-10-fs pulse with a simple quadratic compressor.

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