Comparing Ghent and imec silicon photonics PDs: 320 Gb/s links but 5 dB grating coupler loss
jwt0625 · x · 2026-09-26
The author compares two 2026 silicon photonics papers: Declercq2026 demonstrates 320 Gb/s unamplified transmission using a 100 GHz Ge PD and TFLN MZM on a foundry-compatible SiPh platform co-packaged with traveling-wave drivers and TIAs; Wu2026 integrates thin-film lithium niobate on active silicon photonics using a TiN etch stop to define the bonding trench. The author notes the Ghent/imec platform's grating coupler performs poorly at 5 dB insertion loss.
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