Accession Number : ADD005851

Title :   Three dB Single Mode Optical Fiber Interferometer Beamsplitter/Coupler.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : McLandrich,Matthew N

Report Date : 26 Feb 1979

Pagination or Media Count : 17

Abstract : An improvement for a single mode, fiber ring interferometer reduces the problems normally associated with the use of lenses and conventional beamsplitters. The lenses and beamsplitters are replaced by single-mode optical fiber bidirectional couplers. These couplers are made by removing the claddings of two fibers over a predetermined length and then positioning and fixing the exposed cores together at a predetermined separation. This optical beamsplitter provides a rigid, mechanically stable assembly that effects a three dB energy splitting and coupling to the long single mode fiber in the interferometer. The method of fabricating the beamsplitter/coupler assures a long-term, reliable operation. The rigid structure produced resists the ambient effects of shock, vibration and temperature changes which would otherwise compromise the effectiveness of the interferometer. (Author)

Descriptors :   *Patent applications, *Fiber optics, *Beam splitting, Couplers, Interferometers, Fiber optics transmission lines, Fabrication, Stability, Shock resistance

Subject Categories : Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE