Widely Tunable Electro-Absorption Modulated V-Cavity Laser

Abstract

We report a widely tunable V-cavity laser monolithically integrated with an electroabsorption modulator (EAM). The device shows a 41-nm wavelength tunability covering 51 channels at 100 GHz spacing on the ITU grid, with a side-mode suppression ratio (SMSR) higher than 47 dB. Error-free transmission over 50 km standard single-mode fiber at 10 Gb/s is demonstrated at all wavelengths over the tuning range. The integrated EAM exhibits a dynamic extinction ratio higher than 12.5 dB. The bit-error-rate measurements show a power penalty less than 3 dB for 50-km transmission. The results demonstrate that this ultra-compact and regrowth-free electro-absorption modulated tunable laser can be a costeffective transmitter solution for DWDM metropolitan and access networks.

Design and improvement of InP-based traveling wave Mach-Zehnder modulator for monolithic integrated with V-cavity laser

“…Since the tunable V-cavity laser was firstly proposed 1 in 2008, research on the VCLs has been widely carried out in different wavelengths such as 870 nm 2 , 1310 nm 3 , 1550 nm 4 , and 2810 nm 5 . Moreover, the monolithically integrated tunable VCL and electro-absorption modulator (VCL-EAM) have also been demonstrated 6 , which could realize an errorfree transmission over 50-km standard single-mode fiber at 10 Gb/s in C-band. The effective refractive index change from the QCSE in the multiple quantum wells of InP brings a high modulation efficiency.…”