Posts on this page of our Blog relate to products and information from GPD Optoelectronics.
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Photodetectors sit at the heart of an enormous range of modern systems: fiber optic communications networks, LiDAR sensors in autonomous vehicles, gas analyzers, medical imaging equipment, and precision scientific instruments. Despite this diversity of applications, the selection process follows a consistent logic that is grounded in four fundamental questions about your system and a working … Continue reading
AI data center infrastructure is not only a computing challenge. It is also an optical communications challenge. As 800G networks enter deployment and 1.6T systems move through testing and early productization, data must travel rapidly and reliably between GPUs, switches, racks, and facilities. This speed requirement increases the importance of photodiodes that convert optical signals … Continue reading
Alignment errors are rarely sudden. They accumulate. Then alignment starts to drift. Thermal expansion, vibration, and gradual tool wear introduce continuous micro-shifts in beam position. These shifts are often too small for periodic calibration to capture in time. In lithography and inspection systems, alignment stability depends on continuous feedback. Without it, small positional deviations build … Continue reading
At low signal levels, the question is no longer detection. It is distinction. In semiconductor inspection and metrology systems, lower optical signal levels make it harder to separate true process variation from thermal noise, shot noise, and drift. As measurements approach the noise floor, resolution, repeatability, and confidence in the data all become harder to … Continue reading
Every semiconductor system starts with a signal. Signal drift rarely shows up in the specification. It shows up in the data. Subtle effects such as baseline drift, low SNR, or response lag often go unnoticed during setup but appear later as calibration inconsistencies across wafers and lots. In wafer-level testing and optical metrology, signal integrity … Continue reading
Great optical systems start with a solid understanding of how light detection actually works. GPD Optoelectronics are excited to share their “Fundamentals of Light Detection” guide. This is a free resource designed to help engineers build confidence in photodiode selection and integration. This guide covers semiconductor physics, PN junction behavior, and all major detector types, … Continue reading