Open AccessHigh-extinction electro-optic modulation on lithium niobate thin film
Author(s) -
Mingwei Jin,
Jiayang Chen,
Yong Meng Sua,
YuPing Huang
Publication year - 2019
Publication title -
optics letters/optics index
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.44.001265
Subject(s) - lithium niobate , optics , materials science , thin film , modulation (music) , extinction ratio , optoelectronics , wavelength , physics , nanotechnology , acoustics
Integrated nanophotonics using lithium-niobate-on-insulator promises much-awaited solutions for scalable photonics techniques. One of its core functions is electro-optic modulation, which currently suffers limited extinction (<30 dB) due to inevitable fabrication errors. We exploit a cascaded Mach-Zehnder interferometry design to offset those errors, demonstrating up to 53 dB modulation extinction for a wide range of wavelengths between 1500 nm and 1600 nm. Together, its favorable features of chip integration, high extinction, good stability, and being broadband may prove valuable in a plethora of flourishing photonics applications.