Utilization of self-injection FabryPerot laser diode for long-reach WDM-PON
In this investigation we propose and demonstrate a wavelength widely tunable laser source employing a self-injected FabryPerot laser diode (FP-LD) for long-reach wavelength-division-multiplexed passive optical network (WDM-PON). By using a tunable bandpass filter and an optical circulator inside the gain cavity, a stable and single-longitudinal-mode (SLM) laser output is achieved. Besides, the proposed laser sources are directly modulated at 2.5Gb/s for both downlink and uplink transmissions of 85km single mode fiber (SMF) in PON without dispersion compensation.
self-injection fabryperot laser diode wdm-pon