Polarization Independent Narrow Channel Wavelength Division Multiplexing Fiber Coupler and Method for Producing Same.
Patent, Filed 12 Jun 91, patented 9 Jun 92,
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
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.
- Fiber Optics and Integrated Optics
- Manufacturing and Industrial Engineering and Control of Production Systems