Tunable and broadband hybrid comb based on electro-optic modulated mode-locked laser

Y Yue Zhang J Junwei Dong K Kaifei Tang (Key Laboratory of Intelligent Optical Sensing and Manipulation of the Ministry of Education & National Laboratory of Solid State Microstructures & College of Engineering and Applied Sciences & Institute of Optical Communication Engineering, Nanjing University , Nanjing 210093,) Z Zhenxing Sun (Key Laboratory of Intelligent Optical Sensing and Manipulation of the Ministry of Education & National Laboratory of Solid State Microstructures & College of Engineering and Applied Sciences & Institute of Optical Communication Engineering, Nanjing University , Nanjing 210093,) R Rulei Xiao (Key Laboratory of Intelligent Optical Sensing and Manipulation of the Ministry of Education & National Laboratory of Solid State Microstructures & College of Engineering and Applied Sciences & Institute of Optical Communication Engineering, Nanjing University , Nanjing 210093,) X Xiangfei Chen (College of Engineering and Applied Sciences, Nanjing University 2 , Nanjing 210023,)

Abstract

Currently, integrated combs primarily rely on the Kerr effect, electro-optic (EO) modulation, or mode-locking (ML) mechanisms, each offering distinct advantages and limitations, leading to broad bandwidth and tunability always being at odds with each other. To achieve both of these characteristics, some discrete systems are inevitable. First, InP-based ML laser and lithium niobate-based EO modulator are used to achieve a hybrid comb with low consumption, broad bandwidth, and tunability simultaneously. Furthermore, the heterogeneous integration via ultra-low-loss photonic wire bonding is proposed. The solution addresses the trade-off of integrated combs and allows chip-scale implementation for photonic applications.

Article Details

Volume / Issue Vol. 127, Issue 11
Published September 15, 2025
ISSN 0003-6951
Publisher American Institute of Physics

Journal Info

Applied Physics Letters

American Institute of Physics

ISSN: 0003-6951 Physical Sciences

Authors (6)

Y

Yue Zhang

J

Junwei Dong

K

Kaifei Tang

Key Laboratory of Intelligent Optical Sensing and Manipulation of the Ministry of Education & National Laboratory of Solid State Microstructures & College of Engineering and Applied Sciences & Institute of Optical Communication Engineering, Nanjing University , Nanjing 210093,

Z

Zhenxing Sun

Key Laboratory of Intelligent Optical Sensing and Manipulation of the Ministry of Education & National Laboratory of Solid State Microstructures & College of Engineering and Applied Sciences & Institute of Optical Communication Engineering, Nanjing University , Nanjing 210093,

R

Rulei Xiao

Key Laboratory of Intelligent Optical Sensing and Manipulation of the Ministry of Education & National Laboratory of Solid State Microstructures & College of Engineering and Applied Sciences & Institute of Optical Communication Engineering, Nanjing University , Nanjing 210093,

X

Xiangfei Chen

College of Engineering and Applied Sciences, Nanjing University 2 , Nanjing 210023,