Optical waveguides – With optical coupler – Particular coupling structure
Patent
1993-07-13
1994-08-30
Bovernick, Rodney B.
Optical waveguides
With optical coupler
Particular coupling structure
385 14, G02B 626
Patent
active
053435451
ABSTRACT:
A multi-terminal star coupler having a circuit constituted by optical waveguides integrated on a substrate. For example, in a four-terminal star coupler, four uniformly three-dividing optical couplers are provided for branching from any one terminal to the other three terminals, and an optical waveguide from any one terminal to another terminal not adjacent to the one terminal includes an intersection portion where the optical waveguide intersects another optical waveguide lead from another terminal adjacent to the one terminal.
REFERENCES:
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patent: 4948218 (1990-08-01), Kobayashi
patent: 5109444 (1992-04-01), Honda et al.
Ota, "Coupled Star Network: A New Configuration for Optical Local Area Network", IEICE Trans. Commun., vol. E75-B, No. 2, Feb. 1992, pp. 67-75.
Ota, "Four-port Multimode Interconnectable Star Coupler," Electronics Letters, vol. 29, No. 10, May 13, 1993, pp. 919-920.
Kurokawa et al., "Fiber optic sheet formation by selective photopolymerization," Applied Optics, vol. 17, No. 4, Feb. 15, 1978, pp. 646-650.
Okuda et al., "Planar gradient-index glass waveguide and its applications to a 4-port branched circuit and star coupler," Applied Optics, vol. 23, No. 11, Jun. 1, 1984, pp. 1745-1748.
Ota, "Interconnectable Star Coupler" proceeding of 1991 Spring meeting of the Institute of Electronics, Information and Communication Engineers of Japan, B910, pp. 4-72, 1991.
Ota, "Coupled Star Network," proceeding of 1992 Spring meeting of the Institute of Electronics, Information and Communication Engineers of Japan, B1020, 1990, pp. 4-172.
Arii Mitsuzo
Hirata Masukazu
Kawabata Yasunari
Ota Takeshi
Bovernick Rodney B.
Fuji 'Xerox Co., Ltd.
Mitsubishi Gas Chemical Company Inc.
Ngo John
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