z-logo
open-access-imgOpen Access
Thin-film lithium niobate electro-optic modulator on a D-shaped fiber
Author(s) -
Mengke Wang,
Junhui Li,
Kaixin Chen,
Zhijian Hu
Publication year - 2020
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.396613
Subject(s) - materials science , lithium niobate , electro optic modulator , optics , optical modulator , insertion loss , modulation (music) , optical fiber , optoelectronics , waveguide , phase modulation , physics , phase noise , acoustics
We propose a low-insertion-loss electro-optic modulator formed with LNOI bonded on a D-shaped SMF. The proposed modulator employs high-performance Mach-Zehnder interferometer (MZI) formed with ridge LNOI waveguides and driven by travelling-wave electrodes. The light from the fiber core is coupled into a thin strip LNOI waveguide and then launched into the MZI via a ridge LNOI waveguide with tapered slab height and vice versa. Such all-fiber configuration exempts the need of the butt-coupling with an SMF. The calculated results show that our proposed modulator is capable of achieving a low insertion loss of less than 1.5 dB, an EO modulation efficiency (Vπ·L) of 2.05 V·cm, and a 3-dB modulation bandwidth of larger than 80 GHz. Our all-fiber LNOI modulator is feasible in practice and opens a new door to realize high-speed fiber devices by the integration of an optical fiber and thin film LN.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.
Having issues? You can contact us here