Eiji Tsumura

Low power consumption molded gigabit fiberoptic transceiver module

The standardization task of gigabit Ethernet by IEEE802.3z working group is attracting a great deal of attention. The demands for the modules compliant with the standardized specification will be increased. We have successfully developed gigabit fiberoptic transceiver modules compliant with 1000BASE-LX, proposed specification in gigabit Ethernet. The main feature of this module is 3.3 V operation which leads to low power consumption, while most of the conventional modules operate at 5.0 V. We used the newly designed package with lower profile 9.4 mm in height. The carefully designed modules package was formed by transfer mold encapsulation techniques which contribute to the cost reduction. In this paper, the design, assembling process, and characteristics of the developed module are described.