The paper introduces a 24-channel air-trench isolated Silica-based VOA array. The air trenches thermally insulate the VOAs with etched-free waveguide technologies. Reactive ion etching and wet etching were used at different channel locations to suppress thermal crosstalk and reduce power consumption. https://www.bekindtopets.com/super-value-Beefeaters-Triple-Flavor-Twists-1-41-oz-Case-of-12-quick-super/