Patent ID: 6512617
Filing Date: 2003-01-28
Classification: H04B

Abstract:
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 â€˜0â€™ 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 â€˜0â€™ value; setting a second parameter to zero; reading a target â€˜1â€™ 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 â€˜1â€™ value.