Study of Highly Coherent Mid-Infrared Supercontinuum Generation in CMOS Compatible Si-Rich SiN Tapered Waveguide

Karim, Mohammad Rezaul; Kayed, Nayem Al; Jahan, Nusrat; Alam, M. Shah; Rahman, B. M. A.

doi:10.1109/jlt.2022.3157792

Cited by 7 publications

(2 citation statements)

References 81 publications

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“…6b, top). Different studies have shown numerically that the coherence of the SC is improved in tapered waveguides as compared to waveguides with constant width [37], [40]. This is due to the suppression of modulation instability in tapered waveguides, as a consequence of the continuous change of dispersion, and therefore of the maximum modulation instability gain frequency.…”

Section: Supercontinuum Generationmentioning

confidence: 95%

Mid-infrared supercontinuum generation in a varying dispersion waveguide for multi-species gas spectroscopy

Torre

Armand

Sinobad

et al. 2023

IEEE J. Select. Topics Quantum Electron.

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We report the experimental generation of a broadband and flat mid-infrared supercontinuum in a silicongermanium-on-silicon two-stage waveguide. Our particular design combines a short and narrow waveguide section for efficient supercontinuum generation, and an inverse tapered section that promotes the generation of two spectrally shifted dispersive waves along the propagation direction, leading to an overall broader and flatter supercontinuum. The experimentally generated supercontinuum extended from 2.4 to 5.5 µm, only limited by the long wavelength detection limit of our spectrum analyzer. Numerical simulations predict that the supercontinuum actually extends to 7.8 µm. We exploit the enhanced flatness of our supercontinuum for a proof-of-principle demonstration of freespace multi-species gas spectroscopy of water vapor and carbon dioxide.

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Section: Supercontinuum Generationmentioning

confidence: 95%

Mid-infrared supercontinuum generation in a varying dispersion waveguide for multi-species gas spectroscopy

Torre

Armand

Sinobad

et al. 2023

IEEE J. Select. Topics Quantum Electron.

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“…However, regarding the coherence of the spectrum, they have said nothing. In a subsequent investigation, Karim et al [ 26 ] suggested silicon-rich silicon nitride waveguide to achieve SC with high coherence. Their research resulted in a wide spectrum spanning 6300 nm.…”

Section: Introductionmentioning

confidence: 99%

Numerical exploration of multi-octave spanned supercontinuum generation with high coherence in single material photonic crystal fiber

Salimullah,

Faisal

2024

Heliyon

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Design and analysis of inverse tapered silicon nitride waveguide for flat and highly coherent supercontinuum generation in the mid-infrared

Karim,

Al Kayed,

Rafi

et al. 2023

Opt Quant Electron

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Study of Highly Coherent Mid-Infrared Supercontinuum Generation in CMOS Compatible Si-Rich SiN Tapered Waveguide

Cited by 7 publications

References 81 publications

Mid-infrared supercontinuum generation in a varying dispersion waveguide for multi-species gas spectroscopy

Mid-infrared supercontinuum generation in a varying dispersion waveguide for multi-species gas spectroscopy

Numerical exploration of multi-octave spanned supercontinuum generation with high coherence in single material photonic crystal fiber

Design and analysis of inverse tapered silicon nitride waveguide for flat and highly coherent supercontinuum generation in the mid-infrared

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