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Vertically Stacked Boron Nitride/Graphene Heterostructure for Tunable Antiresonant Hollow-Core Fiber
Yi Cheng1, Xu Cheng2,3, Jin Xie4,5,6
1Center for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
Journal of the American Chemical Society
|September 9, 2025
Summary
Researchers integrated boron nitride/graphene heterostructures into optical fibers, enhancing nonlinear optical modulation by 75%. This advancement enables tunable optical waveguides for integrated photonic devices.
Area of Science:
- Materials Science
- Optoelectronics
- Nanotechnology
Background:
- Two-dimensional (2D) materials offer unique optical properties for optoelectronic applications.
- Hybrid optical fibers integrating 2D materials are advancing rapidly due to chemical vapor deposition.
- Current limitations include the use of single 2D materials, restricting performance versatility.
Purpose of the Study:
- To develop a tunable optical waveguide using a 2D material heterostructure within an antiresonant hollow-core fiber (ARF).
- To enhance graphene's nonlinear optical properties by integrating it with boron nitride (BN) in an ARF.
- To control light-matter interaction and improve all-optical modulation performance.
Main Methods:
- Fabrication of a boron nitride/graphene (BN/Gr) heterostructure within an ARF.
- Utilizing hydroxyl-rich methanol to improve graphene quality and promote vertical BN epitaxy.
- Controlling BN thickness from 5 to 50 nm to modulate optical resonance and light-graphene interaction.
Main Results:
- Engineered optical resonance in the BN/Gr-ARF significantly tuned light-graphene interaction.
- Increased the depth of nonlinear optical modulation from 4% to 10%.
- Achieved a 75% enhancement in all-optical modulation performance.
Conclusions:
- The BN/Gr heterostructure integrated into ARF provides a method for tunable optical waveguides.
- Controlling BN thickness allows for precise modulation of optical resonance and nonlinear effects.
- This approach offers a robust platform for developing highly integrated photonic devices.
