scholarly journals Generation of an ultrabroadband supercontinuum in the mid-infrared region using dispersion-engineered GeAsSe photonic crystal fiber

2018 ◽  
Vol 50 (11) ◽  
Author(s):  
H. Ahmad ◽  
M. R. Karim ◽  
S. Ghosh ◽  
B. M. A. Rahman
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Infrared Region ◽  
Mid Infrared ◽  
Crystal Fiber

scholarly journals Study and Analysis of Photonic Crystal Fiber for Broadband Laser Source Design

2021 ◽  
Vol 20 (4) ◽  
pp. 142-150
Author(s):  
Mohammed Faisal ◽  
SK.M. Jahangir Kabir
Keyword(s):  
Photonic Crystal ◽  
Fiber Optics ◽  
Photonic Crystal Fiber ◽  
Infrared Region ◽  
Supercontinuum Generation ◽  
Laser Source ◽  
Mid Infrared ◽  
Nonlinear Properties ◽  
Crystal Fiber ◽  
Broadband Laser

Photonic Crystal Fiber (PCF) has been a topic of extensive research in the field of nonlinear fiber optics. It is due to its combination of linear and nonlinear properties which ultimately results in the phenomenon having various types of applications. One of the phenomena is supercontinuum generation that has been extensively studied numerically and experimentally over the last few decades as it has important applications in the field of medical imaging and sensing. In this paper, we numerically analysed and studied PCF of hexagonal core with various parameters and propose our novel ‘Star in Hexagon’ design as a good candidate for the broadband supercontinuum generation and hence a broadband laser source. We numerically pumped a long 10 mm PCF of this kind at 3.1 um wavelength with a pulse having a power of 4000 W and a temporal width of 50 fs. A broadband supercontinuum ranging from 1.7 um to 18 um was obtained. The generated spectrum is quite well in the mid-infrared region. Hence it can be utilised for Mid – Infrared (MIR) applications.

scholarly journals Numerical Investigation of Mid-Infrared Supercontinuum Generation in GeAsSe Based Chalcogenide Photonic Crystal Fiber Using Low Peak Power

2016 ◽  
Vol 8 (4) ◽  
pp. 29 ◽  
Author(s):  
M. R. Karim ◽  
B. M. A. Rahman
Keyword(s):  
Photonic Crystal ◽  
Numerical Simulations ◽  
Photonic Crystal Fiber ◽  
Peak Power ◽  
Infrared Region ◽  
Mid Infrared ◽  
Dispersion Engineering ◽  
Crystal Fiber ◽  
Dispersion Wavelength ◽  
Zero Dispersion Wavelength

We numerically investigate the use of photonic crystal fiber (PCF) through dispersion engineering of its cladding containing air-holes for supercontinuum (SC) generation in the mid-infrared region using low peak power. A 3.6-cm-long PCF made using Ge11.5As24Se64.5 chalcogenide (ChG) glass with a hexagonal array of air-holes was optimized for obtaining zero-dispersion wavelength through dispersion tailoring around the pump wavelength of 4 μm. We have performed numerical simulations for such dispersion tailored ChG PCF with the peak power range between 0.25 kW and 2 kW. It was found through rigorous numerical simulations that an ultrabroadband mid-infrared SC spectra covering the wavelength range 2-8 μm which is equivalent to 2 octaves could be generated using pump pulses of 320 fs duration at a wavelength of 4 μm with a relatively low peak power of 2 kW by using our proposed ChG PCF design.

Mid-infrared supercontinuum generation in dispersion-engineered highly nonlinear chalcogenide photonic crystal fiber

2019 ◽  
Vol 33 (19) ◽  
pp. 1950211 ◽  
Author(s):  
Jingling Li ◽  
Feng Zhao ◽  
Zhanqiang Hui
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Low Cost ◽  
Nonlinear Coefficient ◽  
Spectral Width ◽  
Infrared Region ◽  
Cross Sectional ◽  
Mid Infrared ◽  
Crystal Fiber ◽  
Highly Nonlinear

An [Formula: see text]-based chalcogenide highly nonlinear photonic crystal fiber (PCF) with concentric rings consisting of air-holes is proposed to achieve extraordinary flat and small chromatic dispersion in mid-infrared region. This is obtained by design and optimization of the PCF cross-sectional structure. The dispersion variation between ±[Formula: see text]5 ps/(nm[Formula: see text]km) is obtained over 800 nm bandwidth. Both the effective mode area and nonlinear coefficient of the proposed PCF within the whole wavelength range from [Formula: see text] to [Formula: see text] are investigated. Furthermore, the output supercontinuum (SC) optical spectra for different pump wavelengths located at the normal and abnormal dispersion region are investigated, respectively. The results show that the broadest SC with −20 dB spectral width of 1034 nm covering from [Formula: see text] to [Formula: see text] is obtained for the pump wavelength of [Formula: see text] with 100 fs secant hyperbolic pulse of the peak power of 10 kW. Our PCF design offers a low-cost SC source, which can find potential application in mid-infrared photonics.

scholarly journals Theoretical Investigation of an Alcohol-Filled Tellurite Photonic Crystal Fiber Temperature Sensor Based on Four-Wave Mixing

Sensors ◽  
2020 ◽  
Vol 20 (4) ◽  
pp. 1007 ◽  
Author(s):  
Yue Sun ◽  
Xin Yan ◽  
Fang Wang ◽  
Xuenan Zhang ◽  
Shuguang Li ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Temperature Sensor ◽  
Infrared Region ◽  
Four Wave Mixing ◽  
Temperature Sensing ◽  
Wavelength Shift ◽  
Wave Mixing ◽  
Mid Infrared ◽  
Crystal Fiber

For this study, a temperature sensor utilizing a novel tellurite photonic crystal fiber (PCF) is designed. In order to improve the sensor sensitivity, alcohol is filled in the air holes of the tellurite PCF. Based on the degenerate four-wave mixing theory, temperature sensing in the mid-infrared region (MIR) can be achieved by detecting the wavelength shift of signal waves and idler waves during variations in temperature. Simulation results show that at a pump wavelength of 3550 nm, the temperature sensitivity of this proposed sensor can be as high as 0.70 nm/°C. To the best of our knowledge, this is the first study to propose temperature sensing in the MIR by drawing on four-wave mixing (FWM) in a non-silica PCF.

scholarly journals Correction to: Investigation on four-wave mixing toward mid-infrared waveband in tellurite photonic crystal fiber

2019 ◽  
Vol 51 (3) ◽  
Author(s):  
Peng Wang ◽  
Liang Chen ◽  
Xiu Zhang ◽  
Panyun Gao ◽  
Yong Zhou ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Mid Infrared ◽  
Crystal Fiber

High power broadband mid-infrared supercontinuum fiber laser using a novel chalcogenide AsSe2 photonic crystal fiber

2016 ◽  
Vol 55 ◽  
pp. 10-16 ◽  
Author(s):  
Mbaye Diouf ◽  
Amine Ben Salem ◽  
Rim Cherif ◽  
Ahmadou Wague ◽  
Mourad Zghal
Keyword(s):  
Photonic Crystal ◽  
Fiber Laser ◽  
Photonic Crystal Fiber ◽  
High Power ◽  
Mid Infrared ◽  
Crystal Fiber
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