Abstract
In this paper, with dispersion engineering, two waveguides with silicon core and SiO2 cladding are proposed to generate the supercontinuum spectrum and optical frequency combs. By injecting a pulse with a peak power of 800 W and a pulse duration of 50 fs, the output supercontinuum spectrum is obtained from a wavelength of 1100 nm to 4000 nm. Also, broadband optical frequency combs based on a supercontinuum have been obtained by applying a maximum power of 1 kW and a pulse width of 100 fs. Our proposed structure shows promise for achieving flat dispersion and can be useful in engineering applications. The structure exhibits two zero dispersion wavelengths at 1890 nm and 2850 nm, respectively. This flat dispersion can be very useful to achieve the desired output spectrum. Due to the materials used and the flat structure of the proposed waveguides, these can be used for integrated optical circuits as well as applications in optical communications, spectroscopy, and sensors.
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This research was done in the Nano-photonics and Optoelectronics Research Laboratory (NORLab), Shahid Rajaee Teacher Training University.
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This work was supported by Shahid Rajaee Teacher Training University under grant number 4976.
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Mohammad Reza Alizadeh: designed and performed simulations and analyzed data, Mahmood Seifouri: supervised, reviewed, and edited, and Saeed Olyaee: analyzed data, edited, and prepared the final draft of the manuscript.
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Alizadeh, M.R., Seifouri, M. & Olyaee, S. Numerical Investigation and Design of Optical On-Chip Waveguide with Engineered Dispersion for Generation of Supercontinuum-Based Frequency Combs. Silicon 15, 7441–7452 (2023). https://doi.org/10.1007/s12633-023-02596-z
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DOI: https://doi.org/10.1007/s12633-023-02596-z