https://doi.org/10.1140/epjp/s13360-022-02350-1
Regular Article
Dual function twin slotted waveguide for optical pulse compression and dispersion compensation in the second and third telecom windows, respectively
1
Nano-Photonic and Optoelectronic Research Laboratory (NORLab), Shahid Rajaee Teacher Training University, 16788-15811, Tehran, Iran
2
Faculty of Electrical Engineering, Shahid Rajaee Teacher Training University, 16788-15811, Tehran, Iran
Received:
9
August
2021
Accepted:
4
January
2022
Published online:
17
January
2022
This paper presents a dual function twin slotted waveguide to compensate the dispersion of conventional optical fibers in third telecom window and compress optical pulse to an ultrashort pulse at the wavelength of 1310 nm. By analyzing the data obtained using finite-difference time-domain method, a very high negative dispersion was obtained as much as − 24,700 ps/nm.km at the wavelength of 1550 nm. Moreover, the value of relative dispersion slope (RDS) for the designed structure was calculated to be 0.00342 nm−1 which is closely match to that of the conventional optical fibers. On the other hand, zero dispersion wavelength for the proposed design was achieved at the wavelength of 1340 nm and by applying an optical pulse with FWHM of 100 fs at the wavelength of 1310 nm, the output pulse was compressed with the compression factor of 13.8 after the waveguide length of 14 mm. The dual functionality of the proposed waveguide due to very high negative dispersion with matched RDS to that of the conventional optical fibers and high compression factor alongside minimum sized structure makes our design very appropriate for optical integration using Y couplers.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2022
