基于钽酸锂的高速硅光调制技术

Core Insights - The article discusses the advancements in thin-film lithium niobate (TFLN) and thin-film lithium tantalate (TFLT) as leading materials in integrated photonics, highlighting their unique properties such as low optical loss and high electro-optic coefficients, enabling modulation bandwidths exceeding 100 GHz [2] - A new silicon (Si) Mach-Zehnder modulator (MZM) based on heterogeneous integration of TFLT is proposed, showcasing competitive characteristics compared to devices using single-chip TFLT technology [2][3] Technical Developments - The device consists of a hybrid SiN/LT MZM, designed using a standard process design kit (PDK) on a Si photonic chip, with LT integrated via micro-transfer printing [3] - The measured insertion loss and propagation loss in the 7 mm long arm of the modulator total 2.9 dB, with a low half-wave voltage (Vπ) of 3.5 V achieved in push-pull configuration [3] - The modulator demonstrates a working bandwidth exceeding 70 GHz, validated through data transmission experiments using arbitrary waveform generators and photodiodes [3][5] Industry Events - TrendBank plans to host the 2025 Heterogeneous Integration Annual Conference from November 17-19, 2025, in Ningbo, focusing on advanced packaging technologies and fostering collaboration in the electronic information industry [6][7] - The conference will cover topics such as multi-material heterogeneous integration, optoelectronic co-packaging, wafer-level bonding, and advanced packaging technologies like TGV and FOPLP [7]