A method of maintaining desirable optical performance of an optoelectronic apparatus
at extreme temperatures is disclosed. At a first temperature, a first bias current
at which the laser generates optical signals at a first level is determined. At
a second temperature outside of a predefined range of the first temperature, a
second bias current at which the laser generates optical signals at a second level
is determined. If the second temperature is greater than the higher end-point temperature
of the predefined range, the second predefined level is defined to be less than
the first predefined level. If the second temperature is less than the lower end-point
temperature of the predefined range, the second predefined range is defined to
be greater than the first predefined level.