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Branching unit for an optical telecommunication link

A technology of optical communication and branch circuit, which is applied in the direction of circuits, electrical components, optical transmission systems, etc., and can solve the problems of unfavorable arc transfer of switching relays, etc.

Active Publication Date: 2015-05-20
萨伯康姆巴西贸易有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This situation leaves open the possibility of arcing at one or both relays and possible unfavorable arc transfer at the transfer relay (third terminal)

Method used

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  • Branching unit for an optical telecommunication link
  • Branching unit for an optical telecommunication link
  • Branching unit for an optical telecommunication link

Examples

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Embodiment Construction

[0057] Referring to the drawings, reference numeral 100 denotes an optical communication link according to the present invention and reference numeral 1 denotes a branching unit according to the present invention. In the present specification and drawings, the same reference numerals are used to designate the same or corresponding elements in view of the various possible embodiments thereof.

[0058] The optical communication link 100 comprises: at least one underwater branch unit 1 (shown in solid lines); first, second and third ground stations 101, including corresponding first, second and third feeders ( PEE) 102, the feeding device 102 has a corresponding first terminal 103; the first, second and third cable branches 104 have corresponding conductors extending continuously along them and have the first 2 in the branch unit 1 respectively , the corresponding ends terminating at the second 3 and third 4 terminals and the corresponding opposite ends terminating at the first t...

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PUM

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Abstract

A branching unit (1) for an optical telecommunication link (100), the unit comprising a first (2), a second (3) and a third terminal (4) for termination of conductors of respective branch cables in use, a fourth terminal (5) for connection to a sea earth (6) in use, and a circuit (8) comprising a plurality of relays comprising at least a first, a second and a third relay associated to respectively the first, second and third terminal, the circuit being structured for connecting together two terminals out of the first, second and third terminal and for connecting the remaining terminal to the fourth terminal, depending on a sequence of power feeding at the first, second and third terminals, in use, wherein the circuit (8) comprises a sea earth circuit (9) terminated at one end to the fourth terminal and a bidirectional triode thyristor (13) placed along the sea earth circuit, a driving circuit (19) being provided for driving the bidirectional triode thyristor so as to trigger the bidirectional triode thyristor in a conduction state only upon complete switch-over of one relay of the group consisting in the first, second and third relay.

Description

technical field [0001] The present invention relates to branching units for optical telecommunication links, in particular submarine powered optical telecommunication links. Background technique [0002] Undersea optical communication systems are known comprising optical communication links optically connecting at least three ground stations. The optical communication link includes at least one subsea branch unit and at least three fiber optic cable branches respectively connecting the branch unit with corresponding ground stations. Each branch comprises a fiber optic cable (at least partially subsea) comprising a plurality of continuous optical fibers. Each ground station includes a respective transmitter and / or receiver for transmitting and / or receiving optical signals propagating along the optical fiber. [0003] Optical communication links are known which are fed (electrically) from a ground station in order to power optoelectronic and / or electrical and / or electronic e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/80
CPCH01H45/14H04B10/80H04B10/808H04B3/44H01H47/001
Inventor 达尼埃莱·安德罗尼阿尔多·里盖蒂
Owner 萨伯康姆巴西贸易有限公司
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