Publication :
Mach-Zehnder silicon photonic modulator assisted by phase-shifted Bragg gratings

En cours de chargement...
Vignette d'image
Direction de publication
Direction de recherche
Titre de la revue
ISSN de la revue
Titre du volume
Institute of Electrical and Electronics Engineers
Projets de recherche
Structures organisationnelles
Numéro de revue

We experimentally demonstrate a silicon photonic Mach-Zehnder modulator (MZM) assisted by phase-shifted Bragg gratings. Coupled resonators are inserted in the Bragg grating structure to significantly enhance the phase modulation efficiency, while maintaining a wide optical bandwidth compared to other resonator-based modulators. Fabricated using a CMOS-compatible foundry process, the device achieved a small-signal Vπ× L of 0.18, which is seven times lower than a conventional silicon MZM fabricated with the same process. The device has a compact footprint, with a length of only 162 μm , and shows a modulation bandwidth of 28 GHz at a reverse bias of 1 V. Non-return-to-zero modulation is demonstrated at 30 Gb/s with a bit-error-rate (BER) below the 7%-overhead forward error correction (FEC) threshold over a bandwidth of 3.5 nm. This bandwidth should translate into an operating temperature range greater than 40 0 C.

IEEE Photonics Technology Letters, Vol. 32 (8), 445-448 (2020)
URL vers la version publiée
Electro-optic modulators , Optical resonators , Bragg gratings , Modulation enhancement , Silicon photonics , Bandwidth , Optical device fabrication , Optical modulation , Resonators , Adaptive optics
Type de document
article de recherche