PHOSPACK uses Glass interposers to provide a stable and reliable platform for alignment, minimizing signal loss and enhancing performance.
The passive alignment method eliminates the need for active components, reducing complexity and costs.
Fiber optic passive alignment on glass interposers are used as a medium to connect optical fibers to silicon photonic chips, enabling efficient light transmission. Passive alignment techniques rely on precisely fabricated structures, such as V-grooves to align fibers without active adjustments (horizontal coupling).
PHOSPACK uses microstructured Glass wafers to create alignment structures directly on glass embedding fanout ports for dense fiber arrays. This technique allows groove positioning and fabrication made with lithographic precision, dramatically improving volume scalability
For certain applications (e.g. Quantum Photonic Packaging) PHOSPACK also performs vertically-aligned optical fibers (vertical coupling). Grating couplers or turning mirrors on PICs are used in combination with a suitable glass interposer to mechanically support fiber arrays protecting them from excessive flexural bendings while maintaining a stable optical coupling during extreme thermal cyclings.