STATISTIC PARAMETERIZED CONTROL LOOP FOR COMPENSATING POWER AND EXTINCTION RATIO OF A LASER DIODE

摘要

Figure 5 illustrates logic for implementing an automatic power control system (410) in a digital signal processor. The logic comprises a low pass filter (512), a memory location register (502), a difference determination logic unit (520) and an integrator (516), a nonlinear processing block (504) including logic (508) for adding the measurement value AD-in(n) and an absolute value of the measurement value adjusted by a nonlinear estimation reference constant and a low pass filter , a memory location (507) for storing nonlinear estimation reference constant and a memory location 514) for storing modulation current reference value, a difference determination logic unit (522) and an integrator (518).