Open AccessPolarisation rotation Bragg grating with high diffraction efficiency using Si waveguide top surface groove grating
Author(s) -
Okayama H.,
Onawa Y.,
Shimura D.,
Yaegashi H.,
Sasaki H.
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2015.2639
Subject(s) - optics , materials science , fiber bragg grating , blazed grating , grating , diffraction , waveguide , diffraction efficiency , groove (engineering) , diffraction grating , ultrasonic grating , wavelength , acousto optics , rotation (mathematics) , bragg's law , holographic grating , physics , geometry , mathematics , metallurgy
Polarisation‐independent Bragg grating wavelength filter with high diffraction efficiency using silicon waveguide is reported. An antisymmetric grating structure with groove at the top surface of the waveguide is used to generate the polarisation rotation Bragg diffraction. The concept was verified by simulation. Polarisation‐independent bandpass filter consisting of 3 dB coupler and polarisation rotation Bragg diffraction was experimentally demonstrated.