Passive Optical Subassembly Alignment via Reference Device

The patent applies preliminary action by pre-defining alignment reference positions on the substrate before assembly. The alignment reference device is prepared in advance with marked positions that guide the optical fibers to their correct locations, eliminating the need for real-time active adjustment during assembly. This pre-prepared reference system enables faster passive alignment while maintaining precision.

The patent implements self-service by designing a substrate with integrated alignment reference devices that automatically guide the positioning of optical fibers. The reference positions on the substrate serve themselves as alignment guides, eliminating the need for expensive external alignment equipment and complex active adjustment mechanisms. This self-guiding approach reduces production costs while maintaining alignment precision.

The patent introduces an intermediary element - the alignment reference device with predefined reference positions - that mediates between the passive assembly process and the required alignment precision. This intermediary reference system translates the simple passive placement action into precise alignment by providing physical guides and reference markers that ensure accurate positioning without requiring active adjustment.

The patent applies segmentation by dividing the optical subassembly into distinct functional modules: the substrate with alignment reference device, the optical fiber components, and the housing. This modular segmentation allows the alignment reference device to be independently designed and optimized for versatility, while each module maintains relative simplicity. The segmented structure enables easy reconfiguration for different fiber types and connector configurations.