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System and method for increasing upstream communication efficiency in an optical network

  • US 7,039,329 B2
  • Filed: 06/23/2003
  • Issued: 05/02/2006
  • Est. Priority Date: 07/05/2001
  • Status: Expired due to Term
First Claim
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1. A method for increasing upstream communication in an optical network comprising the steps of:

  • receiving an optical signal that is formatted according to a network protocol and predetermined timing scheme and having a predetermined encoding scheme that provides transitions per code group of data to facilitate clock recovery;

    increasing a speed in which a detecting circuit can receive and convert optical signals to electrical signals by adjusting a time constant of the detecting circuit according to a predetermined frequency of the data that is dependent upon the network protocol and encoding scheme;

    increasing a speed in which an automatic gain control circuit coupled to the detecting circuit can adjust gain between different optical signals received by the detecting circuit by adjusting a time constant according to the predetermined frequency, the automatic gain control circuit comprising a first amplifier for comparing voltages;

    receiving electrical signals from the detecting circuit with a limiting circuit; and

    increasing a speed in which the limiting circuit can convert the electrical signals to digital data signals by adjusting a time constant according to the predetermined frequency, the limiting circuit comprising a second amplifier.

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