scholarly journals Dispersion in a Gas Filled Hollow Core Photonic Crystal Fiber

2014 ◽  
Vol 11 (3) ◽  
pp. 1250-1256
Author(s):  
Baghdad Science Journal
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Optical Fibers ◽  
Complex Refractive Index ◽  
Index Structure ◽  
Hollow Core ◽  
Dispersion Properties ◽  
Crystal Fiber ◽  
Crystal Fibers

Hollow core photonic bandgap fibers provide a new geometry for the realization and enhancement of many nonlinear optical effects. Such fibers offer novel guidance and dispersion properties that provide an advantage over conventional fibers for various applications. Dispersion, which expresses the variation with wavelength of the guided-mode group velocity, is one of the most important properties of optical fibers. Photonic crystal fibers (PCFs) offer much larger flexibility than conventional fibers with respect to tailoring of the dispersion curve. This is partly due to the large refractive-index contrast available in the silica/air microstructures, and partly due to the possibility of making complex refractive-index structure over the fiber cross section. In this paper the fundamental physical mechanism has been discussed determining the dispersion properties of PCFs, and the dispersion in a gas filled hollow core photonic crystal fiber has been calculated. We calculate the dispersion of air filled hollow core photonic crystal fiber, also calculate the dispersion of N2 gas filled hollow core photonic crystal fiber and finally we calculate the dispersion of He gas filled hollow core photonic crystal fiber.

Dispersion Properties of Photonic Crystal Fibers - Issues and Opportunities

2003 ◽  
Vol 797 ◽  
Author(s):  
J. Lægsgaard ◽  
S. E. Barkou Libori ◽  
K. Hougaard ◽  
J. Riishede ◽  
T. T. Larsen ◽  
...  
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Optical Fibers ◽  
Photonic Crystal Fibers ◽  
Complex Refractive Index ◽  
Dispersion Properties ◽  
Guided Mode ◽  
Index Contrast ◽  
Mode Group ◽  
Crystal Fibers

ABSTRACTThe dispersion, which expresses the variation with wavelength of the guided-mode group velocity, is one of the most important properties of optical fibers. Photonic crystal fibers (PCFs) offer much larger flexibility than conventional fibers with respect to tailoring of the dispersion curve. This is partly due to the large refractive-index contrast available in silica/air microstructures, and partly due to the possibility of making complex refractive-index structures over the fiber cross section. We discuss the fundamental physical mechanisms determining the dispersion properties of PCFs guiding by either total internal reflection or photonic bandgap effects, and use these insights to outline design principles and generic behaviours of various types of PCFs. A number of examples from recent modeling and experimental work serve to illustrate our general conclusions.

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 In-fiber Mach-Zehnder interferometer for gas refractive index measurements based on a hollow-core photonic crystal fiber

2016 ◽  
Vol 24 (13) ◽  
pp. 14086 ◽  
Author(s):  
Nicholas L. P. Andrews ◽  
Rachel Ross ◽  
Dorit Munzke ◽  
Camiel van Hoorn ◽  
Andrew Brzezinski ◽  
...  
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Zehnder Interferometer ◽  
Hollow Core ◽  
Crystal Fiber ◽  
Mach Zehnder Interferometer

Hollow-Core Photonic Crystal Fiber Based on C2H2 and NH3 Gas Sensor

2013 ◽  
Vol 411-414 ◽  
pp. 1577-1580
Author(s):  
Bao Qun Wu ◽  
Ying Lu ◽  
Cong Jing Hao ◽  
Liang Cheng Duan ◽  
Nan Nan Luan ◽  
...  
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Gas Sensor ◽  
Photonic Crystal Fiber ◽  
Gas Sensing ◽  
Relative Sensitivity ◽  
Sensitivity Coefficient ◽  
Hollow Core ◽  
Crystal Fiber ◽  
Mode Field

In this paper, we propose a new hollow-core photonic crystal fiber, which can be available for gas sensor. In addition, properties of the fiber are analyzed at the wavelength of C2H2and NH3absorption peak 1530nm and 1967nm, respectively. For both wavelengths, relative sensitivity coefficients are higher than 0.95, which makes sense in gas sensing. We also get relationship between relative sensitivity coefficient and radius of fiber core, as well as effective refractive index of the mode field.

Microstructure and Mechanical Properties of Air Core Polymer Photonic Crystal Fibers

2011 ◽  
Vol 233-235 ◽  
pp. 3000-3004
Author(s):  
Hsi Hsin Chien ◽  
Kung Jeng Ma ◽  
Yun Peng Yeh ◽  
Choung Lii Chao
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Optical Fibers ◽  
Photonic Crystal Fibers ◽  
Crystal Fiber ◽  
Microstructured Optical Fiber ◽  
Air Core ◽  
Crystal Fibers ◽  
Hole Fraction ◽  
Air Hole

Polymer based photonic crystal fibers with low cost manufacturability, and the mechanical and chemical flexibility offer key advantages over traditional silica based photonic crystal fibers. PMMA photonic crystal fiber was fabricated by stacking an array of PMMA capillaries to form a preform, and followed by fusing and drawing into fiber with a draw tower. The air hole diameter and fraction of photonic crystal fiber can be manipulated by the thickness of PMMA capillaries and drawing temperature. The measurement of mechanical properties was performed by universal testing machine. The air core guiding phenomena was observed in air-core PMMA photonic crystal fiber. The ultimate tensile strength of PMMA photonic crystal fiber increases with the increase of the air-hole fraction. The mechanical strengths of all the microstructured optical fibers are higher than those of traditional PMMA fibers. This can be attributed to the introduction of more cellular interfaces which hinder the crack propagation and hence improve the mechanical strength. The plastic extension of PMMA microstructured optical fiber decreases with the increase of the air-hole fraction. Overall, the mechanical flexibility of PMMA microstructured optical fiber is superior than that of traditional PMMA optical fibers.

Temperature-independent optical fiber Fabry–Perot refractive-index sensor based on hollow-core photonic crystal fiber

Optik ◽  
2014 ◽  
Vol 125 (13) ◽  
pp. 3295-3298 ◽  
Author(s):  
Ming-shun Jiang ◽  
Qing-mei Sui ◽  
Zhong-wei Jin ◽  
Fa-ye Zhang ◽  
Lei Jia
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Optical Fiber ◽  
Photonic Crystal Fiber ◽  
Refractive Index Sensor ◽  
Hollow Core ◽  
Crystal Fiber ◽  
Fabry Perot

scholarly journals Low Loss in a Gas Filled Hollow Core Photonic crystal fiber

2010 ◽  
Vol 7 (1) ◽  
pp. 129-138
Author(s):  
Baghdad Science Journal
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Nd:Yag Laser ◽  
Input Power ◽  
Hollow Core ◽  
Low Loss ◽  
Photonic Bandgap Fiber ◽  
Crystal Fiber ◽  
Microstructure Fiber ◽  
Crystal Fibers

The work in this paper focuses on the experimental confirming of the losses in photonic crystal fibers (PCF) on the transmission of Q-switched Nd:YAG laser. First HC-PCF was evacuated to 0.1 mbar then the microstructure fiber (PCF) was filled with He gas & gas. Second the input power and output power of Q-switched Nd:YAG laser was measured in hollow core photonic bandgap fiber (HCPCF). In this work loss was calculated in the hollow core photonic crystal fiber (HCPCF) filled with air then N2, and He gases respectively. It has bean observed that the minimum loss obtained in case of filling (HC-PCF) with He gas and its equal to 15.070 dB/km at operating wavelength (1040-1090) nm.

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