Accession Number : ADD008575

Title :   Optical Fiber-to-Fiber Evanescent Field Coupler.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Sheem,Sang K

Report Date : 28 Apr 1981

Pagination or Media Count : 8

Abstract : This patent discloses a single-mode or multimode, optical, fiber-to-fiber coupler which couples such fibers together so that an optical beam guided by one fiber is coupled to the other fiber through evanescent field coupling. In coupling fibers together, the plastic coating is removed along a desired length of each fiber. The fibers are twisted or braided together and cladding is etched to a desired diameter in a suitable housing. After etching, the etchant is drained and the fibers and inside of the housing are cleaned by any suitable cleaning solution. Subsequent to cleaning, the housing is filled with a solution or material which has an index of refraction which is less than that of the core. It has been determined that coupling efficiency can be controlled simply by adjusting the tension of the coupling fibers. (Author)

Descriptors :   *Patents, *Fiber optics transmission lines, *Waveguide couplers, Couplings, Etching, Cleaning, Housings

Subject Categories : Mfg & Industrial Eng & Control of Product Sys
      Fiber Optics and Integrated Optics
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE