48-Channel Matrix Optical Transmitter on a Single Direct Fiber Connector

Abstract

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Co-Packaged Optics With Multimode Fiber Interface Employing 2-D VCSEL Matrix

“…In this silicon interposer design, impedance-matched traces electrically connect the BiCMOS driver ICs to the 2D VCSELs matrix. Based on standard semiconductor technology, silicon interposers are fabricated on a wafer level, which provides a robust and low-cost matrix configuration [21]. From the bottom side, the silicon interposer also optically connects the VCSELs and the micro-lens array through wet-etched optical through silicon vias and thermally connected to the thermal electric cooler (TEC) for thermal dissipation.…”

“…Then, lithographically defined metal traces are plated for the high-speed differential inputs, high-speed single-ended outputs, and power supplies. The traces design can support higher than 40-GHz bandwidth [21]. Top and bottom sides alignments are used to pattern the opening on both sides.…”