A novel low-cost small-form-factor transceiver module

A key trend in the optoelectronic data-communication industry is the move towards lower cost and smaller transceivers. This trend has driven transceiver modules to the Small-Form-Factor (SFF) dimensions, requiring SFF optical connectors, resulting in a cost lower than their larger predecessors (for example GBICs or 1/spl times/9 transceivers based on the larger duplex SC optical connector). The design and implementation of a low-cost SFF fiber optic transceiver based on the SFF LC fiber optic connector is discussed. Since most of the transceiver cost is associated with the optical subassemblies (OSAs), low cost, yet smaller OSAs are required. In addition, the entire transceiver assembly has been optimized for cost reduction by using direct-chip-attach electronics, and surface-mount components all mounted on a single card that snaps into a plastic-molded retainer. These SFF LC transceivers are well suited for Gigabit Ethernet, Fibre Channel, and 1394b applications, along with other applications requiring low cost data transfer at data rates of 1.25 Gb/s to 2.125 Gb/s, or higher.