Optical waveguides – With optical coupler – Particular coupling structure
Patent
1990-09-10
1991-11-12
Gonzalez, Frank
Optical waveguides
With optical coupler
Particular coupling structure
385 51, 385 27, G02B 626
Patent
active
050642677
ABSTRACT:
During the process of manufacturing polarization-selective fused-fiber couplers (1) having two or more input fibers and two or more output fibers and formed in the coupling region (fused region 6) from parallel, nonbirefringent, matched-cladding single-mode fibers, prior to the fusion of the fibers, linearly polarized light with a selected wavelength is fed into one of the input fibers (2) and detected at the ends of the two output fibers (3). The fibers are thereupon fused together with the coupler (1) being drawn until the coupling between the two fibers ceases to fluctuate. The source of heat is then turned off. With the method it is possible to manufacture fused-fiber couplers (1) whose lengths are only approximately 10 mm to 15 mm.
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patent: 4906068 (1990-03-01), Olson et al.
patent: 4932740 (1990-06-01), Berkey et al.
"All-Fibre Polarising Beamsplitter," Electronics Letters, 14th Mar. 1985, vol. 21, No. 6, M. S. Yataki et al.
"Fibre-Optic Polarising Beam Splitter Employing Birefringent-Fibre Coupler," Electronics Letters, 9th May 1985, vol. 21, No. 10, I. Yokohama et al.
ALCATEL N.V.
Gonzalez Frank
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