Accession Number : ADD015473
Title : Polarization Independent Narrow Channel Wavelength Division Multiplexing Fiber Coupler and Method for Producing Same.
Descriptive Note : Patent, Filed 12 Jun 91, patented 9 Jun 92,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC
Personal Author(s) : Orazi, Richard J ; McLandrich, Matthew N
Report Date : 09 Jun 1992
Pagination or Media Count : 13
Abstract : The invention provides a method for fabricating a polarization independent narrow channel wavelength division multiplexing fiber optic coupler, comprising the steps of holding: two optical fibers in an abutting longitudinal relation along a predetermined length of the fibers; injecting light energy into one of the fibers; fusing the optical fibers together along the predetermined length to form a fused length of a fiber optic coupler; elongating the fused length of the fusing optical fibers; measuring the light energy output from the ends of the first and second fibers; ceasing the fusing and elongating when the measured light energy output from the ends of the first and second fibers indicates that a predetermined number, Ns, of one-half power transfer cycles have occurred in the coupler, where the Nsth one-half power transfer cycle occurs within a K pi phase region of a polarization envelope associated with the coupler, where K is a positive integer.
Descriptors : *CHANNELS, *COUPLERS, *FIBER OPTICS, *MULTIPLEXING, *POLARIZATION, *PATENTS, DIVISION, ENERGY, FIBERS, INVENTIONS, LENGTH, LIGHT, OPTICS, FUSION(MELTING)
Subject Categories : Fiber Optics and Integrated Optics
Mfg & Industrial Eng & Control of Product Sys
Distribution Statement : APPROVED FOR PUBLIC RELEASE