As detailed in AZoM’s article “Lithium Niobate on Insulator (LNOI) – A Promising Material for Photonic Integrated Circuits (PICs),” the emergence of lithium niobate on insulator (LNOI) has sparked considerable interest in the realm of photonic integrated circuits (PICs). Offering a suite of unique optical properties, including high electro-optic coefficients, intrinsic optical nonlinearities, and broad transparency windows, LNOI presents a compelling platform for diverse photonic applications.

One notable project aimed at harnessing the potential of LNOI technology is led by CSEM, focusing on the development of a Carrier-Envelope Offset Frequency (fCEO) detection unit. This endeavor leverages CSEM’s extensive expertise across the PIC value chain, encompassing design, fabrication, packaging, testing, and system integration.

The fCEO detection unit, based on LNOI waveguide technology, promises significant advantages over conventional approaches, including lower energy requirements and reduced size and cost. By employing a low-loss etching technique, CSEM aims to achieve efficient light coupling and minimal loss levels in LNOI waveguides, critical for optimal device performance.

Furthermore, integrating hermetic sealing within the unit’s design ensures robust protection and longevity, essential for applications in demanding industrial and space environments. This commitment to hermeticity underscores the pivotal role of sealing technology in advancing the reliability and functionality of LNOI-based PICs.

As depicted in the CAD design, the comprehensive packaging solution incorporates components within a standard butterfly 14-pin package designed for seamless integration and thermal management. With a focus on precision and reliability, hermetic sealing contributes to the realization of fully packaged and competitive PIC-based solutions, propelling the adoption of LNOI technology across diverse industrial sectors.

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