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Methods and systems for control and calibration of VCSEL-based optical transceivers

  • US 6,512,617 B1
  • Filed: 02/03/1999
  • Issued: 01/28/2003
  • Est. Priority Date: 02/03/1998
  • Status: Expired due to Term
First Claim
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1. A method of automatic calibration and control of optical link parameters in a VCSEL-based optical transceiver, the method comprising:

  • inserting an optical loop-back to optically couple an optical transmitter and an optical receiver;

    initiating a calibration cycle by an input signal;

    setting a first parameter to zero;

    reading a target ‘

    0’

    value from a memory location;

    generating a first light emission based upon the first parameter;

    feeding the first light emission back to the optical detector through the optical loop-back;

    comparing a value representing the first light emission to the target ‘

    0’

    value;

    setting a second parameter to zero;

    reading a target ‘

    1

    value from a memory location;

    generating a second light emission based upon the second parameter value;

    feeding the second light emission back to the optical detector through the optical loop-back; and

    comparing a value representing the second light emission to the target ‘

    1’

    value.

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