Multiplex communications – Wide area network – Packet switching
Patent
1978-12-18
1984-01-03
Lee, John D.
Multiplex communications
Wide area network
Packet switching
350 9620, 370 4, G02B 514
Patent
active
044239220
ABSTRACT:
A directional coupler for an optical communications system of the type utilizing non-collimated optical beams transmitted by waveguides. The coupler includes an input waveguide, a network waveguide, and a detector port, and has a beam-directing surface positioned between the input waveguide and the network waveguide. The beam-directing surface defines an opening aligned with and adjacent to the input waveguide, and a beam conducting medium fills the space between the two waveguides. Input optical beams are transmitted from the input waveguide through the opening to the network waveguide, and output optical beams are transmitted from the network waveguide to the beam-directing surface. The core area of the network waveguide is large relative to the opening, and the output optical beam expands as it travels through the conducting medium to the directing surface. The portion of the output beam not entering the opening is directed to the detector port, and the area of this portion is large relative to the area of the opening so that power loss is minimal.
REFERENCES:
patent: 3504182 (1970-03-01), Pizzurro et al.
patent: 3870396 (1975-03-01), Racki et al.
patent: 3883217 (1975-05-01), Love et al.
patent: 3883222 (1975-05-01), Gunderson
patent: 3936141 (1976-02-01), Milton
patent: 3937560 (1976-02-01), Milton
patent: 3977764 (1976-08-01), d'Auria et al.
patent: 4021099 (1977-05-01), Kawasaki et al.
patent: 4092061 (1978-05-01), Stigliani, Jr.
patent: 4149770 (1979-04-01), Milton et al.
patent: 4165914 (1979-08-01), Villarruel et al.
patent: 4169656 (1979-10-01), Hodge
Cooper, "Coupler for Optical Data", IBM Tech. Discl. Bulletin, vol. 16, No. 5, Oct. 1973, pp. 1470-1471.
"Simple Coupler Taps Fiber-Optic Cables", Electronics, Dec. 20, 1973, pp. 30-31.
Donahue B. A.
Hess Lynn H.
Lee John D.
The Boeing Company
LandOfFree
Directional coupler for optical communications system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Directional coupler for optical communications system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Directional coupler for optical communications system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1029597