Abstract: An optoelectric transducer module is adapted for mounting at or near the edge of a printed circuit board, for transducing between optical signals flowing in an MT ferrule and electrical signals on the printed circuit board. The transduction may be in either direction. The module uses HDI circuit techniques in conjunction with solid-state optoelectric arrays for reliability and low cost. According to an aspect of the invention, the module is convertible to adapt to any of a number of connector types which use the MT-style ferrule. Thus, the type of connector does not need to be known a priori, but the basic module may be mounted on the printed circuit board, and later fitted with a connector receptacle corresponding to the desired one.

Abstract: An optoelectric transducer module is adapted for mounting at or near the edge of a printed circuit board, for transducing between optical signals flowing in an MT ferrule and electrical signals on the printed circuit board. The transduction may be in either direction. The module uses HDI circuit techniques in conjunction with solid-state optoelectric arrays for reliability and low cost. According to an aspect of the invention, the module is convertible to adapt to any of a number of connector types which use the MT-style ferrule. Thus, the type of connector does not need to be known a priori, but the basic module may be mounted on the printed circuit board, and later fitted with a connector receptacle corresponding to the desired one.

Abstract: A two-way light amplitude divider includes a light rotator (18) with first (18.sub.1), second (18.sub.2) and third (18.sub.3) ports. The second port is coupled to a port of a controllable Fabry-Perot etalon (22). The etalon can take on a state in which a particular .lambda. of light is passed, and others are reflected. Light at .lambda..sub.1 applied to the first port (18.sub.1) of the rotator (18) passes through the etalon (22) to a port (22.sub.2) when the etalon (22) is in its first state, and the light is reflected by the etalon (22) in its second state, and flows to the third port (18.sub.3) of the rotator (18). Thus, the arrangement (10) acts as a single-pole, double throw switch, depending upon the state of the etalon. The arrangement can be cascaded in a manner which operates as a multiplexer (700) or demultiplexer (600).