A Compact 16-channel Integrated Optical Subscriber Module for Economical Optical Access Systems

摘要

We developed a compact, 16-channel integrated optical subscriber module for one-fiber bi-directional FastEthernet optical access systems. They can support more subscribers in a limited mounting space. For ultimate compactness, we created 8-channel integrated super-compact optical modules, 4-channel integrated limiting amplifiers, and 4-channel integrated LD drivers for Fast Ethernet. We introduce a new simulation method based on FDTD method to analyze the electrical crosstalk that degrades sensitivity of the optical module. A new 1C architecture is applied to reduce electrical crosstalk. We manufactured the optical subscriber module with these optical modules and ICs. Experiments confirm that the module offers a sensitivity of -27.3dBm under 16-channel 125Mbit/s simultaneous operation.