Open AccessCharacterization of focusing grating couplers for telecom wavelengths in the first and second diffraction order
Author(s) -
Anna Elmanova,
I. Elmanov,
Pavel An,
Vadim Kovalyuk,
A. Yu. Kuzin,
Alexander Golikov,
Gregory Goltsman
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2086/1/012052
Subject(s) - grating , diffraction , blazed grating , optics , wavelength , diffraction grating , photonics , materials science , ultrasonic grating , optoelectronics , physics
In this work we studied how focusing grating couplers, developed for telecommunication C-band wavelength range, can be applied in the near infrared range. In the paper we presented prospects of usage of both first and second diffraction maxima of theoretically computed diffraction grating couplers for photonic aims. The dependence of the central wavelength of the grating on the etching depth of the photonic layer, on the period and filling factor of the grating was studied. We have compared our experimental results with numerical study, performed using finite elements method of solving differential equations. The work is important for different photonic applications and introduces new prospects in application of the already fabricated devices, developed for telecommunication wavelengths.