Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7447406 | Coated optical fibre unit and methods of manufacturing coated optical fibre units An optical fiber unit having a sheath and a plurality of optical fiber elements loosely housed in the sheath. The sheath is coated with particles of an adherence reducing substance and has a radial thickness that is not substantially greater than 0.3 mm. The coating... | 11/04/2008 |
| 7177511 | Optical fiber, optical fiber filter, and optical amplifier An optical fiber filter includes an optical fiber, a pair of first coupling regions, and a phase-shift region. The optical fiber includes a core and a cladding. An optical signal can pass through the optical fiber. The first coupling regions are formed in the optica... | 02/13/2007 |
| D534912 | Modular data communication device | 01/09/2007 |
| 7016576 | Method for producing an optical fibre telecommunications cable with reduced polarization mode dispersion An optical cable for telecommunications having an optical core and a plurality of protecting and reinforcing elements or avers placed around the optical core. The optical core has a central reinforcing element, a polymer layer, a plurality of optical fibers incorpor... | 03/21/2006 |
| 6985761 | Superconducting cable In order to reduce the AC losses in a superconducting conductor element subjected to an external magnetic field and through which a current flows, tapes of superconducting material of each layer are wound at such a mutual distance that the gap between the supercondu... | 01/10/2006 |
| 6941054 | Optical transmission link with low slope, raman amplified fiber An optical fiber transmission link has a first optical fiber with a high effective area coupled to a second, downstream optical fiber with a low effective area. The downstream fiber has non-zero dispersion and low dispersion slope. Characteristics of the upstream fi... | 09/06/2005 |
| D507569 | Modular data communication device | 07/19/2005 |
| 6885802 | Network for distributing signals to a plurality of user equipment A network for distributing signals to a plurality of user having a distribution unit and a plurality of optical cables adapted to make the distribution unit communicate with the plurality of user equipment. In turn, each optical cable has an optical fibre having a c... | 04/26/2005 |
| 6844526 | Method and apparatus for pre-heating the conductor elements of cables with extruded insulators, in particular conductors with metal tape reinforcements A method and apparatus for preheating the conductor elements of cables with extruded insulator essentially by forced thermal convection. Particularly for conductors with metal tape reinforcement, such as for example Milliken conductors, where it has been found that ... | 01/18/2005 |
| 6824870 | Cable with recyclable covering A cable with recyclable covering, particularly for transporting or distributing medium or high voltage energy, in which at least one covering layer is based on thermoplastic polymer material comprising a propylene homopolymer or a copolymer of propylene with ethylen... | 11/30/2004 |
| 6025954 | Amplified telecommunication system for wavelength-division multiplexing transmissions, having an equalized reception power An optical telecommunication system including a transmitting station and a receiving station for optical signals, connected with each other by an optical fiber line including optical line amplifiers having a rare-earth-doped active fiber and connected in ... | 02/15/2000 |
