What question did this study set out to answer?

To explore the phenomenon of mode splitting induced by ultralow backscattering in topological valley photonic cavities and develop a method for its evaluation.

February 9, 2026Laser & Photonics Review

Ultralow‐Backscattering Induced Mode Splitting in Chipscale Valley Photonic Topological Cavities

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Authors

KCKaiji ChenTongji University WWWenhao Wang YTYi Ji TanNanyang Technological University

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Implication

This research demonstrates mode splitting via ultralow backscattering in topological cavities, suggesting enhanced performance in integrated photonic systems.

Key Points

To explore the phenomenon of mode splitting induced by ultralow backscattering in topological valley photonic cavities and develop a method for its evaluation.
Investigated the backscattering loss at sharp corners in a topological cavity.
Conducted high-resolution terahertz spectral measurements in silicon chips.
Evaluated the optical transport characteristics of valley edge states.
Observed a backscattering loss of 0.10 dB/bend overall and a minimum of 0.047 dB/bend near the K valley.
Confirmed an extremely low loss of 0.09 dB/bend through measurements.
Demonstrated that mode splitting can enhance spectral engineering in integrated devices.

Cite This Study

Chen et al. (2026) studied this question.

synapsesocial.com/papers/69897a86f0ec2af6756e8ba8 https://doi.org/10.1002/lpor.202503189

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Implication

This research demonstrates mode splitting via ultralow backscattering in topological cavities, suggesting enhanced performance in integrated photonic systems.

Ultralow‐Backscattering Induced Mode Splitting in Chipscale Valley Photonic Topological Cavities

Discussion

Member takes

Implication

Key Points

Cite This Study

Ultralow‐Backscattering Induced Mode Splitting in Chipscale Valley Photonic Topological Cavities

Discussion

Member takes

Implication

Key Points

Cite This Study

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