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Digital optical transmitter

  • US 6,356,374 B1
  • Filed: 10/09/1998
  • Issued: 03/12/2002
  • Est. Priority Date: 10/09/1998
  • Status: Expired due to Term
First Claim
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1. A communication system for providing information, the communication system comprising:

  • a clock source for generating a clock signal having a clock speed;

    an optical receiver coupled to the clock source for recovering the information in accordance with the clock signal;

    an optical transmitter coupled to the clock source and the optical receiver, the optical transmitter comprising;

    first and second input ports for receiving first and second information signals;

    a clock port coupled to the clock source for receiving the clock signal;

    a clock recovery circuit for filtering the clock signal provided at the clock port;

    an analog-to-digital (A/D) converter coupled to the clock recovery circuit for digitizing the clock signal;

    an interleaver coupled to the first and second input ports and to the clock port, wherein the interleaver interleaves bits of the first and second information signals in accordance with the clock signal, after it has been digitized, to generate a serial bit stream;

    a controller coupled to the A/D converter and the interleaver for clocking the interleaver at a multiple of the clock speed; and

    a laser diode coupled to the interleaver and modulated by the serial bit stream to generate a digital optical signal; and

    an optical communication channel coupled between the laser diode of the optical transmitter and the optical receiver.

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