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

Cheshmberah, Alireza; Seifouri, Mahmood; Olyaee, Saeed

doi:10.1007/s11082-020-02626-9

Cited by 11 publications

(2 citation statements)

References 40 publications

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“…Although the spectral bandwidth of the SC in this paper is shorter than the previous paper, it also has a shorter length (1 mm), which is an advantage of this designed PCF. The SC in the previous article (Cheshmberah et al 2020) is in the third telecommunication window (1550 nm), but here the central wavelength of the SC is 1300 nm, which changes its use in WDM.…”

Section: Introductionmentioning

confidence: 98%

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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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Section: Introductionmentioning

confidence: 98%

“…Recently, we presented a paper on the use of a 5 mm photonic crystal fiber based on chalcogenide elements, with a pulse input of 100 fs and a power of 1 kW of spectral bandwidth of 5 μm produced in the third telecommunication window (1550 nm), which used in WDM as a carrier in optical telecommunications (Cheshmberah et al 2020).…”

Section: Introductionmentioning

confidence: 99%