Electrical and optical isolating unit for an undersea...

Optical waveguides – Optical transmission cable

Reexamination Certificate

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C385S135000

Reexamination Certificate

active

07085456

ABSTRACT:
An optical and electrical isolating unit for use with a branching unit located in an undersea optical transmission system is provided. The unit includes a pressure vessel adapted for use in an undersea environment. First, second and third ports are located in the pressure vessel for receiving first, second and third undersea transmission cables, respectively. The first cable includes an electrical power conductor and at least one optical fiber. The second cable includes an electrical conductor, and the third cable, which is electrically unpowered, includes at least one optical fiber. An electrical power conductor segment is provided for electrically coupling the conductor in the first cable received in the first port to the conductor in the second cable received in the second port. At least one optical fiber segment is located in the pressure vessel, which segment optically couples the optical fiber of the first cable to the optical fiber of the third cable.

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patent: 6160222 (2000-12-01), Claverie
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patent: 2003/0198027 (2003-10-01), Takeda et al.
patent: 2005/0084207 (2005-04-01), Nagel et al.
Chesnoy, J. (editor) et al. “Terminal Equipment”. Undersea Fiber Communication Systems. Academic Press. Chapter 10 pp. 337-410. 2002.

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