Abstract
An alternative and simple fiber-optic backreflectance method for indirectly determining the effective focal lengths of optical elements by the spatial location of three specific points (the focal point and two object points) is presented. The basic optical element of the method is the single-mode optical fiber. It serves simultaneously as a point light source, an object for projecting, and a point receiver that is highly sensitive to spatial displacements for focused backreflectance laser emission. The method provides high accuracy for both locating the spatial points (1 µm) and determining the effective focal length (less than 0.5%).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
