Author(s): Yu, WQ (Yu, Wenqi); Dai, SX (Dai, Shuangxing); Zhao, YR (Zhao, Yiru); Zhao, QF (Zhao, Qinfeng); Li, JY (Li, Jinye); Liu, JG (Liu, Jianguo)

Source: IEEE PHOTONICS JOURNAL Volume: 12 Issue: 5 Article Number: 2700308 DOI: 10.1109/JPHOT.2020.3025626 Published: OCT 2020

Abstract: An all-pass racetrack-resonator-Bragg gratings (APRR-BG) on thin-film lithium niobate on insulator (LNOI) based coupling resonant system is proposed to generate tunable electromagnetically induced transparency (EIT)-like transmission. The structure is a normal all-pass racetrack-resonator with two Bragg gratings inscribed within the straight waveguides, which introduces two different optical pathways in essence, inducing EIT-like spectrum as a result. We investigate the linewidth, and tunability of the EIT-like spectrum, and manufacturing tolerance of the resonant system by utilising the transfer matrix method. The simulation results indicate an extremely narrow linewidth of several picometers, and a high voltage sensitivity of 0.338 GHz/V@1550 nm, which indicates potential for optical filter, optical switching, and sensing of the system.

Accession Number: WOS:000579383900003

ISSN: 1943-0655

eISSN: 1943-0647

Full Text: https://ieeexplore.ieee.org/document/9204367