OPTICAL ISOLATOR USING FUSED COUPLERS IN FERRULES AND GRIN-LENSES

摘要

The fiber optic devices disclosed include fiber optic coupler-isolator combinations. These combinations are especially applicable to fiber optic tapping and pumping arrangements. By integrating such devices into a housed subassembly, enhanced size and design characteristics are achieved. The firs t coupler (324) may be used for multiplexing a signal and a pump beam whereas the second (354) is used for monitoring. The isolator (318) receives and transmits the light to the couplers via slanted GRIN lenses.