Optical fiber having internal partial mirrors.

摘要

An optical fiber (10) has an internal partial mirror (12) disposed to partially transmit and to partially reflect optical energy incident thereon. Said fiber (10) comprises a first fiber segment (14) having a first core region (22) which circumscribes a longitudinal axis (X), said first core region (22) being of a first cross-sectional area perpendicular to said longitudinal axis (X). Said fiber (10) further comprises a second fiber segment (18) in optical communication with said first fiber segment (14), said second fiber segment (18) having a second core region (24) which circumscribes said axis (X) wherein said second core region (24) is of a second cross-sectional area perpendicular to said axis (Fig. 1). Further described is a fiber optic interferometer comprising an optical energy source, photodetector and an improved optical fiber having dual internal partially reflected mirrors therebetween. <IMAGE>