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Optic system useful with metal service lines

  • US 4,935,918 A
  • Filed: 09/17/1986
  • Issued: 06/19/1990
  • Est. Priority Date: 08/01/1985
  • Status: Expired due to Fees
First Claim
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1. An optical communications system comprising:

  • (a) an optical-fiber street line;

    (b) an optical-fiber transfer line;

    (c) a plurality of transmitting stations communicating with said street line, at least one of which stations provides an electrical signal;

    (d) means to provide a single optical source synchronization pulse through said optical-fiber street line;

    (e) electro-optical modulating means to accept electrical signals originating from each transmitting station and to act on at least a portion of said single optical source synchronization pulse from said street line to convert each said electrical signal into a time-divided modulated optical signal;

    (f) optical coupling means to transfer each said modulated optical signal to said transfer line;

    (g) delay means to cause the signal transferred to said transfer line from any of said transmitting stations to be inserted into a different time slot from that of any signal transferred to said transfer line from any other of said stations; and

    (h) switching means and routing means communicating with said street and transfer lines for accepting said time-divided multiplexed modulating optical signals and routing same through at least one outgoing optical communications line to at least one receiving station.

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