Compact Size and Low Cost Hermetic Sealed 100Gbps (25Gbps × 4Ch) Receiver Optical Sub-Assembly (ROSA) Design Using AlN Substrate and Si Optical Bench (SiOB) Cover

Compact size and low cost hermetic sealed 100 Gb/s (25 Gb/s × 4 channels) ROSA using AlN substrate and SiOB cover without expensive ceramic package and mechanical machining components have been designed and fabricated. The fabricated ROSA satisfies IEEE 100GBASE Ethernet LR4 specifications.