Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1986-06-02
1989-01-10
Lee, John D.
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
156663, G02B 626
Patent
active
047969687
ABSTRACT:
A single-mode optical-fiber directional coupler including at least two optical fibers each having a core surrounded by a cladding material and having a region of reduced cladding diameter contiguous with a reduced-cladding diameter region of the other fiber throughout the length of an optical interaction area. Each reduced-cladding-diameter region is bounded on each end by a tapered region which gradually increases in diameter as it extends away from the reduced-cladding-diameter region toward a full-diameter region of each fiber. There is also a substrate and means for securing the reduced-cladding-diameter region to the substrate, means for supporting the fibers in their full-diameter region beyond each end of the optical interaction area, means for fastening the support means to the substrate and a medium surrounding the reduced-diameter regions and having an index of refraction similar to that of the cladding material. This invention also features a method of making such a directional coupler involving temperature gradients in temperature sensitive etchant placed along portions of the cladding areas of at least two optical fibers.
REFERENCES:
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patent: 4511209 (1985-04-01), Skutnik
patent: 4523810 (1985-06-01), Goss et al.
patent: 4564417 (1986-01-01), Schoen et al.
American Heritage Dictionary, 2nd College Edition, Houghton Mifflin Co. (Boston), 1982, p. 1392.
Liao et al., "Single-Mode Fiber Coupler", Applied Optics, vol. 20, No. 15, Aug. 1981, pp. 2731-2734.
Tran et al., "Single-Mode Fiber Directional Couplers Fabricated by Twist-Etching Techniques (Stabilization)", IEEE Journal of Quantum Electronics, vol. QE-17, No. 6, Jun. 1981, pp. 988-991.
Bergh et al., "Single-Mode Fibre Optic Directional Coupler", Electronics Letters, vol. 6, No. 7, Mar. 1980, pp. 260-261.
Cardarelli Donato
Coccoli Joseph D.
Stemniski John R.
Dingman Brian M.
Iandiorio Joseph S.
Lee John D.
The Charles Stark Draper Laboratory Inc.
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