Long-Cavity Fabry–Perot Laser Amplifier Transmitter With Enhanced Injection-Locking Bandwidth for WDM-PON Application

摘要

We simulate the injection-locking performance of a 1% antireflection coated Fabry–Perot laser amplifier (AR-FPLA) and demonstrate the 2.5-Gbit/s DWDM-PON application with the directly modulated AR-FPLA based ONU transmitter under side-mode injection-locking condition. The effect of the AR-FPLA front-facet reflectivity on the injection locking range detuning and the $Q$-factor are interpreted from theoretical simulations and are experimentally characterized. A 25-channel locking capacity is reported for such a side-mode injection-locked AR-FPLA with corresponding wavelength locking range of 30 nm, the minimal requested power of ${-}7$ dBm and gain extinction ratio of $ 35$ dB can guarantee the BER of $< 10^{-9}$ with their worst receiving sensitivity degrading to $- 19$ dBm.