Improving the sensitivity of the HC-PBF based gas sensor by optimization of core size and mode interference suppression

Arman, Hassan; Olyaee, Saeed

doi:10.1007/s11082-020-02538-8

Cited by 12 publications

(10 citation statements)

References 26 publications

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“…This numerical method is finite-element method (FEM) which is the most suitable method for analyzing the structural parameters of photonic crystal fibers. Optimization of the hollow-core radius an essential action for reducing confinement losses and consequently enhanced the relative sensitivity [23], [26].…”

Section: Results Of Confinement Loss Reduction and Relative Sensitivimentioning

confidence: 99%

“…In order to locating the operation wavelength inside the bandgap, the structural parameters were carefully considered. So, the structural specifications were considered as follows: the air-filling factor of 0.97, and the lattice constant of ᴧ=3.88 µm [7], [23].…”

Section: Results Of Confinement Loss Reduction and Relative Sensitivimentioning

confidence: 99%

“…As mentioned above, almost all of the light power is located in the hollow-core of the photonic bandgap fiber. However, there are destructive parameters that limit the performance of PBF-based gas sensors; presence of unstable guided higher order modes and the mismatch of light coupling that cause mode interference and mode mismatch, respectively [12], [23]. Photonic band gap fibers depending on the dimensions and the shape of the hollow-core, may support more than one mode.…”

Section: Introductionmentioning

confidence: 99%

“…Light coupling discrepancy between the SMF and the HC-PBF will deteriorate the performance of the gas sensor based on hollow-core photonic bandgap fiber [9] so, an appropriate method should be considered. The relative sensitivity and confinement loss are two important propagation specifications of the PBF based gas sensors which are highly dependent on the structural characteristics of the fiber [23], [24]. Recently, we proposed a HC-PBF based gas sensor [23].…”

Section: Introductionmentioning

confidence: 99%

“…The relative sensitivity and confinement loss are two important propagation specifications of the PBF based gas sensors which are highly dependent on the structural characteristics of the fiber [23], [24]. Recently, we proposed a HC-PBF based gas sensor [23]. The sensitivity of this sensor was improved by optimization of core size and mode interference suppression.…”

Section: Introductionmentioning

confidence: 99%

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Realization of Low Confinement Loss Acetylene Gas Sensor by Using Hollow-core Photonic Bandgap Fiber 

Arman

Olyaee

2021

Preprint

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A hollow-core photonic bandgap fiber (HC-PBF) with high relative sensitivity and low confinement loss was designed. Some destructive circumstance such as propagation losses and mode interference can disrupt performance of the PBF. By considering optimum size of the hollow-core radius, we were able to improve confinement loss and the relative sensitivity. By optimization of the shape and size of the closest row of air holes to the hollow core, the quality of the mode distribution in the hollow-core was well improved. Simulation results confirm that, at an optimal and reasonable core radius, the relative sensitivity and confinement loss of the proposed gas sensor were improved to 96.5% and 0.11 dB/m, respectively. In addition, in order to better matching of optical power between single mode fiber (SMF) and HC-PBF, we could reduce the destructive effects of optical mode mismatch, by mode interference suppression. Furthermore, by optimization of fiber structural specifications such as air filling fraction and lattice constant, the PBF was changed to a single-mode waveguide. Considering the operation wavelength 1530 nm which is very close to the acetylene gas absorption wavelength, this fiber is appropriate to be a high sensitivity gas sensor to detect absorbing gases in the middle infrared range.

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Section: Results Of Confinement Loss Reduction and Relative Sensitivimentioning

confidence: 99%

Section: Results Of Confinement Loss Reduction and Relative Sensitivimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Realization of Low Confinement Loss Acetylene Gas Sensor by Using Hollow-core Photonic Bandgap Fiber 

Arman

Olyaee

2021

Preprint

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Supercontinuum generation in PCF with As2S3/Ge20Sb15Se65 Chalcogenide core pumped at third telecommunication wavelengths for WDM

2020

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Design of all-normal dispersion with Ge11.5As24Se64.5/Ge20Sb15Se65 chalcogenide PCF pumped at 1300 nm for supercontinuum generation

2021

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Supercontinuum spectrum generation is a process in which laser beam in femtoseconds and high power (kilowatts) is converted into a broad-spectrum beam of light after passing through a specific environment. Of course, achieving this range comes with many limitations. In this paper, photonic crystal fibers are used as a substrate for input pulse due to the ability to control dispersion and loss, and creating single-mode operating conditions. One of the main factors for the formation of supercontinuum spectra of injection pulses is maintaining the nonlinear performance of this type of fiber by controlling the effective mode area and also using chalcogenides (nonlinear coefficients about 100 times higher than silica) in their structure. In the proposed structure, a photonic crystal fiber with silica base element and air cavities with hexagonal structure with the center of Ge11.5As24Se64.5 chalcogenide element have been used to provide the nonlinear property of the structure. Also, in this structure, a ring of Ge20Sb15Se65 chalcogenide elements has been used to reduce the effective mode region and create a flat dispersion curve at a wavelength of 1300 nm (second telecommunication window). The input pulse power is 10 kW and its width is 50 femtoseconds, which has caused the range of the supercontinuum from 800 nm to 1900 nm. This structure can be used to provide the required wavelengths as a carrier in a wavelength division multiplexing (WDM).

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Improving the sensitivity of the HC-PBF based gas sensor by optimization of core size and mode interference suppression

Cited by 12 publications

References 26 publications

Realization of Low Confinement Loss Acetylene Gas Sensor by Using Hollow-core Photonic Bandgap Fiber

Realization of Low Confinement Loss Acetylene Gas Sensor by Using Hollow-core Photonic Bandgap Fiber

Supercontinuum generation in PCF with As2S3/Ge20Sb15Se65 Chalcogenide core pumped at third telecommunication wavelengths for WDM

Design of all-normal dispersion with Ge11.5As24Se64.5/Ge20Sb15Se65 chalcogenide PCF pumped at 1300 nm for supercontinuum generation

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Improving the sensitivity of the HC-PBF based gas sensor by optimization of core size and mode interference suppression

Cited by 12 publications

References 26 publications

Realization of Low Confinement Loss Acetylene Gas Sensor by Using Hollow-core Photonic Bandgap Fiber&nbsp;

Realization of Low Confinement Loss Acetylene Gas Sensor by Using Hollow-core Photonic Bandgap Fiber&nbsp;

Supercontinuum generation in PCF with As2S3/Ge20Sb15Se65 Chalcogenide core pumped at third telecommunication wavelengths for WDM

Design of all-normal dispersion with Ge11.5As24Se64.5/Ge20Sb15Se65 chalcogenide PCF pumped at 1300 nm for supercontinuum generation

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Realization of Low Confinement Loss Acetylene Gas Sensor by Using Hollow-core Photonic Bandgap Fiber

Realization of Low Confinement Loss Acetylene Gas Sensor by Using Hollow-core Photonic Bandgap Fiber