Mitsubishi Electric Corp. has introduced the ML7xx42 distributed feedback laser diode (DFB-LD) and the PD8xx24 avalanche photodiode (APD) for use in optical network units (ONUs) of symmetric 10-Gigabit Ethernet Passive Optical Network (10G-EPON) applications. The ML7xx42 DFB-LD incorporates an AlGaInAs active layer that provides 10...