The power emission from a semiconductor laser rear facet changes characteristically if a reflecting device, e.g., an optical fiber, is placed opposite the laser front facet. Based on this power change a novel method to determine quantitatively the optical feedback from a fiber to a laser is developed. The method is applied to evaluate the feedback of several standard laser-to-fiber coupling techniques.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.