Gas sensing with suspended core fibres and hollow core band gap fibres: a comparative study

2009 ◽  
Author(s):  
Hartmut Lehmann ◽  
Jens Kobelke ◽  
Kay Schuster ◽  
Reinhardt Willsch ◽  
Hartmut Bartelt ◽  
...  
Keyword(s):  
Comparative Study ◽  
Band Gap ◽  
Gas Sensing ◽  
Hollow Core ◽  
Core Band

scholarly journals Characteristic Analysis and Structural Design of Hollow-Core Photonic Crystal Fibers with Band Gap Cladding Structures

Sensors ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 284
Author(s):  
Bowei Wan ◽  
Lianqing Zhu ◽  
Xin Ma ◽  
Tianshu Li ◽  
Jian Zhang
Keyword(s):  
Photonic Crystal ◽  
Band Gap ◽  
Photonic Crystal Fibers ◽  
Relative Sensitivity ◽  
Confinement Loss ◽  
Hollow Core ◽  
Characteristic Analysis ◽  
Element Analysis ◽  
The Core ◽  
Crystal Fibers

Due to their flexible structure and excellent optical characteristics hollow-core photonic crystal fibers (HC-PCFs) are used in many fields, such as active optical devices, communications, and optical fiber sensing. In this paper, to analyze the characteristics of HC-PCFs, we carried out finite element analysis and analyzed the design for the band gap cladding structure of HC-PCFs. First, the characteristics of HC19-1550 and HC-1550-02 in the C-band were simulated. Subsequently, the structural optimization of the seven-cell HC-1550-02 and variations in characteristics of the optimized HC-1550-02 in the wavelength range 1250–1850 nm were investigated. The simulation results revealed that the optimal number of cladding layers is eight, the optimal core radius is 1.8 times the spacing of adjacent air holes, and the optimal-relative thickness of the core quartz-ring is 2.0. In addition, the low confinement loss bandwidth of the optimized structure is 225 nm. Under the transmission bandwidth of the optimized structure, the core optical power is above 98%, the confinement loss is below 9.0 × 10−3 dB/m, the variation range of the effective mode field area does not exceed 10 μm2, and the relative sensitivity is above 0.9570. The designed sensor exhibits an ultra-high relative sensitivity and almost zero confinement loss, making it highly suitable for high-sensitivity gas or liquid sensing.

scholarly journals Enhanced two-photon absorption in a hollow-core photonic-band-gap fiber

2011 ◽  
Vol 83 (3) ◽  
Author(s):  
Kasturi Saha ◽  
Vivek Venkataraman ◽  
Pablo Londero ◽  
Alexander L. Gaeta
Keyword(s):  
Band Gap ◽  
Photonic Band Gap ◽  
Photon Absorption ◽  
Hollow Core ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Photonic Band

A comparative study on the NO2 gas sensing properties of ZnO thin films, nanowires and nanorods

2011 ◽  
Vol 520 (3) ◽  
pp. 932-938 ◽  
Author(s):  
S. Öztürk ◽  
N. Kılınç ◽  
N. Taşaltin ◽  
Z.Z. Öztürk
Keyword(s):  
Thin Films ◽  
Comparative Study ◽  
Gas Sensing ◽  
Zno Thin Films ◽  
Sensing Properties ◽  
Gas Sensing Properties

A comparative study of solution-processed low- and high-band-gap chalcopyrite thin-film solar cells

2014 ◽  
Vol 47 (13) ◽  
pp. 135105 ◽  
Author(s):  
Se Jin Park ◽  
Yunae Cho ◽  
Sung Hwan Moon ◽  
Ji Eun Kim ◽  
Doh-Kwon Lee ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Comparative Study ◽  
Band Gap ◽  
Thin Film Solar Cells ◽  
Solution Processed ◽  
High Band

scholarly journals Realistic Design of Large-Hollow-Core Photonic Band-Gap Fibers With Suppressed Higher Order Modes and Surface Modes

2007 ◽  
Vol 25 (9) ◽  
pp. 2440-2447 ◽  
Author(s):  
Kunimasa Saitoh ◽  
Nikolaos John Florous ◽  
Tadashi Murao ◽  
Masanori Koshiba
Keyword(s):  
Band Gap ◽  
Photonic Band Gap ◽  
Higher Order ◽  
Hollow Core ◽  
Surface Modes ◽  
Higher Order Modes ◽  
Photonic Band
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