FIBER OPTIC REDUNDANT COMMUNICATIONS LINK INTERFACE

WE PROPOSE TO DESIGN THE INTERFACE BOARD LOGIC IN MODULAR FORM SO THAT IT CAN BE IMPLEMENTED IN APPLICATION SPECIFIC INTEGRATED CIRCUITS (ASIC'S). A HIGH DEGREE OF INTEGRATION IS NECESSARY TO FIT THE LOGIC OF THE HOST INTERFACE AND A MINIMUM OF EIGHT FIBER OPTIC TRANSCEIVERS ON A SINGLE CIRCUIT BOARD. IN ORDER TO MINIMIZE THE DESIGN TIME OF THE INTEGRATED CIRCUITRY THE LOGIC WILL BE PARTITIONED INTO AS MANY SMALL CIRCUIT MODULES AS PRACTICAL, WHICH WILL BE COMBINED INTO HYBRID PACKAGES TO ACHIEVE THE NECESSARY PACKING DENSITY. ALL THE FUNCTIONS OF OPTICAL SIGNAL LAUNCHING AND DETECTION, RECEIVED SIGNAL PHASE LOCKED SPEED MATCHING, CLOCK AND DATA SEPARATION, WORD FRAMING, AND RECEIVED DATA SYCHRONIZATION TO LOCAL CLOCK FOR EACH LINK CAN BE IMPLEMENTED IN INDIVIDUAL ANALOG AND DIGITAL INTEGRATED CIRCUITS OF MODEST DENSITY AND COMBINED INTO A SINGLE FUNCTIONAL HARDWARE MODULE ON A HYBRID SUBSTRATE.