Optimization of laser parameters to achieve desired performance
View Patent ↗One example disclosed herein relates to a method of at least partially optimizing one or more output performance parameters of a laser die. The method includes an act of identifying one or more output performance parameters to be at least partially optimized, an act of identifying one or more design parameters associated with the one or more output performance parameters, an act of determining a subset of the one or more design parameters that should be varied so as to at least partially effect the one or more output performance parameters, an act of varying the subset of design parameters to produce one or more intermediate results, and an act of using the intermediate results to determine values for the one or more design parameters such that the one or more performance parameters are at least partially optimized.
1. A method of at least partially optimizing output performance for a laser die, the method comprising:
an act of identifying a first design parameter for a first laser die;
an act of identifying a second design parameter for a second laser die, the first and second design parameters configured to at least partially affect one or more output performance parameters of a laser die;
an act of varying the first design parameter to produce first intermediate performance results for the first laser die;
an act of varying the second design parameter to produce second intermediate performance results for the second laser die; and
an act of using the first and second intermediate performance results to determine a value for the first and second design parameters that at least partially optimizes the one or more output performance parameters for a third laser die.
2. The method in accordance with claim 1 , further comprising:
an act of identifying a third design parameter;
an act of varying the third design parameter to produce third intermediate performance results; and
an act of determining a value for the third design parameter that at least partially optimizes the one or more output performance parameters.
3. The method in accordance with claim 2 , further comprising:
an act of identifying a fourth design parameter;
an act of varying the fourth design parameter to produce fourth intermediate performance results; and
an act of determining a value for the fourth design parameter that at least partially optimizes the one or more output performance parameters.
4. The method in accordance with claim 3 , wherein the first and second design parameters are the same type of parameter and the third and fourth design parameters are the same type of parameter.
5. The method in accordance with claim 1 , wherein the first and second design parameters are the same type of parameter.
6. The method in accordance with claim 1 , wherein the act of using the first and second intermediate results to determine a value for the first and second design parameters such that an overall output performance of the laser die is at least partially optimized comprises:
an act of trading-off between the first and second design parameters until a value of the first and second design parameters is determined that produces an acceptable output performance of the laser die.
7. The method in accordance with claim 1 , wherein the one or more output performance parameters comprise linearity of output power vs. current curve, modulation efficiency, speed at a certain current, and threshold current over temperature.
8. The method in accordance with claim 1 , wherein the first and second design parameters are selected from a number of active region wells, a spacer layer thickness, distance between a mode modifier layer and an active region, thickness of the mode modifier layer, composition of mode modifier layer, width of a mesa layer, cavity length, and minor or facet reflectivities.
9. The method in accordance with claim 1 , wherein the laser die is a Fabry-Perot (FP) laser.
10. The method in accordance with claim 1 , wherein the laser die is a DFB laser.