Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1981-02-12
1982-11-23
Lee, John D.
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
350 9615, 156158, G02B 5172
Patent
active
043602487
ABSTRACT:
A multiport optical cable or bus, composed of bundles of parallel fibers interconnected by an optical star structure, has a higher packing fraction and greater efficiency in the mixing and redistribution functions because the star's radiating arms have their individual cladding layers omitted or removed and because they are fused together to form the mixer section or a part of it. Where the numbers of input and output ports and arms are unequal, the unclad arms have their fused portions optically spliced or connected to form a composite mixer section. Several sections may be cascaded, using the same structural principles, to provide additional lower-level optical outputs for control or other purposes. The cladding function for the star structure is provided by separately encasing the radiating arms and mixer section or sections in a light-reflecting material. Preferably, this is a plastic potting compound having an optical index of refraction lower than those of the star arms or mixer portions. Alternatively, a metallic reflective coating may be applied. The invention has particular utility as applied to optical buses comprised of fibers of the plastic clad silica type.
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K. Ogawa et al., "Multimode Fiber Coupler," Applied Optics, vol. 17, No. 13, Jul. 1978.
K. Ogawa, "Multimode Fiber Coupler-Theory and Experiment," Optical Fiber Transmission II, Williamsburg, Virginia, WB7-1, Feb. 1977.
Barnoski, "Fundamentals of Optical Fiber Communications," Academic Press Inc., New York 1976, pp. 210-213.
Baldwin David L.
Bickel Gary W.
Gonzalez Frank
International Telephone and Telegraph Corporation
Lee John D.
Lee, Jr. Robert E.
O'Halloran John T.
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