Highly birefringent do-octagonal photonic crystal fibers with ultra flattened zero dispersion for supercontinuum generation

Kumar, Pranaw; Fiaboe, Kokou Firmin; Roy, Jibendu Sekhar

doi:10.1590/2179-10742019v18i11454

Cited by 10 publications

(7 citation statements)

References 46 publications

(35 reference statements)

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“…The A eff increases gradually with the wavelength. The structure with the highest Λ gave the highest values of effective mode area at 1.55 μm thus 7.456 μm 2 , agreeing with [13,47], corresponding to a nonlinear co-efficient of 15.64 W −1 km −1 in Figure 7. However, at a Λ of 1.7 μm the value of 41.769 W −1 km −1 of nonlinear co-efficient has been realised which is close to [43] making the structure with Λ of 1.7 μm being highly nonlinear and higher than [13].…”

Section: Verification Of Effective Mode Area and Nonlinear Co-efficientsupporting

confidence: 72%

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Numerical analysis of photonic crystal fibre with high birefringence and high nonlinearity

Agbemabiese

Akowuah

2020

Journal of Optical Communications

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A four-ring microstructure photonic crystal fibre with a descending air hole ring cladding is presented. Numerical analysis of the structure is done using full vectorial finite element method with perfectly matched layer (PML) boundary condition. It is demonstrated that it is possible to achieve at 1.55 µm confinement loss of 2.767 × 10−5 dB/m, birefringence of 0.00346 and a nonlinear co-efficient of 41.77 km−1 W−1. Also, chromatic dispersion realised suggests a tuneable zero dispersion at 0.9–1.1 µm wavelength range.

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Section: Verification Of Effective Mode Area and Nonlinear Co-efficientsupporting

confidence: 72%

“…Birefringence of 0.005 has been achieved at Λ = 1.9, 1.8 and 1.7 μm. This value is smaller than [12,14,43,47,48] however, these structures have defects created in the core. The beat length for the PCF decreases as the wavelength increases.…”

Section: Verification Of Birefringence and Beat Lengthmentioning

confidence: 84%

Numerical analysis of photonic crystal fibre with high birefringence and high nonlinearity

Agbemabiese

Akowuah

2020

Journal of Optical Communications

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“…Furthermore, research has shown that achieving high birefringence, high nonlinearity and negative dispersion can be useful for polarization control in fiber optic sensors, telecommunication applications and broadband dispersion compensation in high-bit-rate transmission systems 22 . A lot of work has been reported recently to achieve high birefringence, high nonlinearity and dispersion management through the use of elliptical holes around the core 23,24 , using different shapes of air holes other than circular in or around the core [25][26][27] , defective core 21 , doping the core with gas or liquid and hybrid cladding 28,29 , double cladding 22 , dual core photonic bandgap 30 , triangular lattice 31 and other shapes of air hole rings apart from the widely used hexagonal lattice [32][33][34][35] . Rhombic and elliptical hole PCFs have been presented 26 to achieve birefringence (B) of 8 × 10 -3 and Confinement loss(CL) of 5 × 10 -4 dB/m at 1.55 µm.…”

Section: Numerical Analysis Of Photonic Crystal Fiber Of Ultra-high Bmentioning

confidence: 99%

Numerical analysis of photonic crystal fiber of ultra-high birefringence and high nonlinearity

Agbemabiese

Akowuah

2020

Sci Rep

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A numerical analysis of a hexagonal PCF structure with four circular air hole rings around the core has been presented in this paper. By utilizing a full vectorial finite element method with perfectly matched layers, propagation properties such as birefringence, chromatic dispersion and confinement losses are numericaly evaluated for the proposed PCF structure. Specifically, birefringence of 2.018 × 10–2, nonlinear coefficients of 40.682 W−1 km−1, negative chromatic dispersion of − 47.72 ps/km.nm at 1.55 µm and − 21 to − 105 ps/km.nm at the telecommunication band of C-U have been reported.

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“…An optical pulse and its evolution with slow varying electric field amplitude are represented by its envelope function A ( z , t ) that is defined by the generalized nonlinear Schrodinger equation as follows :

\begin{matrix} \frac{\partial A}{\partial Z} + \frac{α}{2} A + {false\sum}_{n \geq 2}^{n} i^{n + 1} \frac{β_{n}}{n!} \frac{\partial^{n} A}{\partial t^{n}} \\ = i (γ (ω_{0}) + i γ_{1} \frac{\partial}{\partial t}) . A false(z, t false) \int_{- \infty}^{t} R (t^{'}) {false| A (z, t - t^{'}) false|}^{2} d t^{'} . \end{matrix}

…”

Section: Design Of Proposed Pcf Structuresmentioning

confidence: 99%

Design of nonlinear photonic crystal fibers with ultra‐flattened zero dispersion for supercontinuum generation

2020

Self Cite

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The study reports on the design and performance of two air‐filled and two partial ethanol‐filled photonic crystal fiber (PCF) structures with a tetra core for supercontinuum generation. The PCFs are nonlinear with ultra‐flattened zero dispersion. Holes with smaller areas are used to create a tetra‐core PCF structure. Ethanol is filled in the holes of smaller area while the larger holes of cladding region are air‐filled. Optical properties including dispersion, effective mode area, confinement loss, normalized frequency, and nonlinear coefficient of the designed PCF structures are investigated via full vector finite difference time domain (FDTD) method. A PCF structure with lead silicate as wafer exhibits significantly better results than a PCF structure with silica as wafer. However, both structures report dispersion at a telecommunication wavelength corresponding to 1.55 μm. Furthermore, the PCF structure with lead silicate as wafer exhibits a very high nonlinear coefficient corresponding to 1375 W−1 km−1 at the same wavelength. This scheme can be used for optical communication systems and in optical devices by exploiting the principle of nonlinearity.

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Highly birefringent do-octagonal photonic crystal fibers with ultra flattened zero dispersion for supercontinuum generation

Cited by 10 publications

References 46 publications

Numerical analysis of photonic crystal fibre with high birefringence and high nonlinearity

Numerical analysis of photonic crystal fibre with high birefringence and high nonlinearity

Numerical analysis of photonic crystal fiber of ultra-high birefringence and high nonlinearity

Design of nonlinear photonic crystal fibers with ultra‐flattened zero dispersion for supercontinuum generation

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