Exploring a Band-Edge Bragg Grating Modulator on a Hybrid Thin-Film Lithium Niobate Platform

In this work, we design, model, and characterize the Bragg grating modulator (BGM) on silicon-rich nitride and thin-film lithium niobate (SRN-TFLN) platform. In particular, the slow-light effect on the electro-optical modulation response is modeled and experimentally validated. The presented modulat...

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Bibliographic Details
Published in:IEEE photonics journal 2021-12, Vol.13 (6), p.1-5
Main Authors: Huang, Xingrui, Liu, Yang, Guan, Huan, Yu, Zhiguo, Tan, Manqing, Li, Zhiyong
Format: Article
Language:English
Subjects:
Bandwidth
Bragg gratings
Data transmission
Design optimization
Electro-optic deflectors
Electro-optic modulators
Electro-optical effect
electro-optical systems
High speed
Lithium niobates
Modulation
Optical device fabrication
optical interconnects
Optical modulation
Optical refraction
Waveguide devices
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Summary:In this work, we design, model, and characterize the Bragg grating modulator (BGM) on silicon-rich nitride and thin-film lithium niobate (SRN-TFLN) platform. In particular, the slow-light effect on the electro-optical modulation response is modeled and experimentally validated. The presented modulator shows a 3-dB electro-optical (E-O) bandwidth beyond 40 GHz, which agrees well with the simulation results. High-speed modulation up to 60 Gbps and 70 Gbps are experimentally obtained with extinction ratio (ER) of 4.7 dB and 2.7 dB, respectively. A measured modulation efficiency of 2.47 pm/V is also achieved. With optimized slow-light effect and proper design, the proposed BGM has great potential in high-speed data transmission.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2021.3120786