Continuously Tunable Laser Based on Multiple-Section DFB Laser Technology for 1.25 Gbps WDM-PON Applications

The Investigation of the Balanced Output Power of Multi-Section Tunable Laser Based On Reconstruction-Equivalent Chirp Technique

“…[1] While various methods have already been proposed to achieve semiconductor wavelength tunable laser devices [2]- [6], the cost is now a major factor decides which device can be widely used in commercial market. In-line multi-wavelength laser array is also a device proposed to realize a tunable laser [7], [8], with reconstruction-equivalent chirp (REC) technique, the fabrication of such multi-wavelength array can be simplified and the cost can be lowered [9]- [12]. Recently, an in-line tunable laser employs only current tuning has been demonstrated [13].…”