Modal interferometer based on volatile organic compounds diffused in a simplified hollow-core photonic crystal fiber

2013 ◽  
Author(s):  
Luo Niu ◽  
Chun-Liu Zhao ◽  
Juan Kang ◽  
Man-Ping Ye
Keyword(s):  
Photonic Crystal ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Photonic Crystal Fiber ◽  
Hollow Core ◽  
Crystal Fiber ◽  
Volatile Organic

scholarly journals Chemical sensor based on a solid-core photonic crystal fiber interferometer

2019 ◽  
Vol 13 (27) ◽  
pp. 127-143
Author(s):  
Rawaa K. Zarzoor
Keyword(s):  
Photonic Crystal ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Photonic Crystal Fiber ◽  
Chemical Sensor ◽  
Pump Light ◽  
Solid Core ◽  
Crystal Fiber ◽  
Sensing Applications ◽  
Volatile Organic

Photonic crystal fiber interferometers are used in many sensing applications. In this work, an in-reflection photonic crystal fiber (PCF) based on Mach-Zehnder (micro-holes collapsing) (MZ) interferometer, which exhibits high sensitivity to different volatile organic compounds (VOCs), without the needing of any permeable material. The interferometer is robust, compact, and consists of a stub photonic crystal fiber of large-mode area, photonic crystal fiber spliced to standard single mode fiber (SMF) (corning-28), this splicing occurs with optimized splice loss 0.19 dB In the splice regions the voids of the holey fiber are completely collapsed, which allows the excitation and recombination of core and cladding modes. The device reflection spectrum exhibits a sinusoidal interference pattern which shifts differently when the voids of the PCF are infiltrated with VOC molecules. The volume of voids responsible for the shift is less than 5microliters whereas the detectable levels are in the nanomole range. Laser diode with a wavelength 1550nm has been used as a pump light source. Two types of chemical liquids used (N-Hexane, and Propanol). The detection limits of our device associated with the maximum shifts of the wavelength is 4.4 nm for N-Hexane vapor when the length of the head sensor 20mm. In this work, the maximum sensitivity obtained of volatile organic compounds is 15420 nm/mol at the vapor of N-Hexane.

A hollow-core circular photonic crystal fiber mode selective coupler for generating orbital angular momentum modes

2021 ◽  
Vol 64 ◽  
pp. 102543
Author(s):  
Jingxuan Yang ◽  
Hu Zhang ◽  
Xiaoguang Zhang ◽  
Ze Chen ◽  
Lixia Xi ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Orbital Angular Momentum ◽  
Hollow Core ◽  
Crystal Fiber ◽  
Fiber Mode

Designing Tunable Microstructure Spectroscopic Gas Sensor Using Optofluidic Hollow-Core Photonic Crystal Fiber

2014 ◽  
Vol 50 (12) ◽  
pp. 1-8 ◽  
Author(s):  
Majid Ebnali-Heidari ◽  
Farshid Koohi-Kamali ◽  
Aliakbar Ebnali-Heidari ◽  
Mohammad Kazem Moravvej-Farshi ◽  
Boris T. Kuhlmey
Keyword(s):  
Photonic Crystal ◽  
Gas Sensor ◽  
Photonic Crystal Fiber ◽  
Hollow Core ◽  
Crystal Fiber

scholarly journals Deleterious processes of a diode-pumped cesium vapor hollow-core photonic-crystal fiber laser

2016 ◽  
Vol 4 ◽  
Author(s):  
Guofei An ◽  
You Wang ◽  
Juhong Han ◽  
He Cai ◽  
Zhigang Jiang ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Cesium Vapor ◽  
Hollow Core ◽  
Penning Ionization ◽  
Photonic Bandgap Fiber ◽  
Crystal Fiber ◽  
Energy Pooling ◽  
Glass Cell ◽  
Diode Pumped

A diode-pumped alkali laser (DPAL) provides the significant promise for high-powered performances. In this paper, a mathematical model is introduced for examination of the kinetic processes of a diode-pumped cesium vapor hollow-core photonic-crystal fiber (HC-PCF) laser, in which the cesium vapor is filled in the center hole of a photonic-bandgap fiber instead of a glass cell. The influence of deleterious processes including energy pooling, photo-ionization, and Penning ionization on the physical features of a fiber DPAL is studied in this report. It has been theoretically demonstrated that the deleterious processes cannot be ignored in a high-powered fiber-DPAL system.

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