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September 10, 2025Laser & Photonics Review

Ultra‐Compact and Ultra‐High Speed Topological Photonic Crystal Modulator Based on Thin Film Lithium Niobate

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The ultra-compact TPhC modulator has a footprint of only 57.6 µm², facilitating integration into photonic circuits.
A tuning efficiency of up to 24.3 pm V⁻¹ enhances the modulator’s performance and response speed.
Experimental results demonstrate a measured bandwidth of over 110 GHz, substantially exceeding the typical requirements for high-speed communication.
The device enables high-speed signal transmission at 220 Gb/s with an impressively low bit-switching energy of 0.2 fJ.

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Implication

Experimental demonstration shows that the TPhC modulator improves bandwidth over 200 GHz in compact circuits, indicating its potential for integrated photonic applications.

Cite This Study

Chen et al. (2025) studied this question.

synapsesocial.com/papers/68c1c31b54b1d3bfb60f0806 https://doi.org/10.1002/lpor.202500380

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Implication

Experimental demonstration shows that the TPhC modulator improves bandwidth over 200 GHz in compact circuits, indicating its potential for integrated photonic applications.

Ultra‐Compact and Ultra‐High Speed Topological Photonic Crystal Modulator Based on Thin Film Lithium Niobate

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Discussion

Implication

Cite This Study

Ultra‐Compact and Ultra‐High Speed Topological Photonic Crystal Modulator Based on Thin Film Lithium Niobate

Key Points

Discussion

Implication

Cite This Study

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