Title :
Tunable External Cavity Laser by Hybrid Integration of a Superluminescent Diode and a Polymer Bragg Reflector
Author :
Oh, Su Hwan ; Yoon, Ki-Hong ; Kim, Ki Soo ; Kim, Jongbae ; Kwon, O. -Kyun ; Oh, Dae Kon ; Noh, Young-Ouk ; Seo, Jun-Kyu ; Lee, Hyung-Jong
Author_Institution :
Photonic-Wireless Convergence Components Dept., Electron. & Telecommun. Res. Inst. (ETRI), Daejeon, South Korea
Abstract :
We report a tunable external cavity laser (T-ECL) using a superluminescent diode (SLD) and a polymer Bragg reflector with 0.8-nm mode spacing 25 channels operating in the direct modulation of 2.5 Gb/s for a low-cost source of a wavelength division multiplexed passive optical network (WDM-PON) system. The maximum output power is 12.2 mW and the slope efficiency of the T-ECL is about 0.12-0.17 mW/mA in the tuning range of 20 nm at the SLD current of 50 mA and at the temperature of 25°C. The T-ECL successfully operated in the direct modulation for 2.5-Gb/s transmission through 20-km standard single-mode fiber. The power penalty of the T-ECL is less than 0.8 dB for 25 channels after the 20-km transmission. The power penalty variation is less than 1.5 dB in the wavelength-tuning range of 20 nm. The performance of the T-ECL satisfies the requirements of the WDM-PON system.
Keywords :
distributed Bragg reflector lasers; integrated optics; laser cavity resonators; laser modes; laser tuning; optical fibre networks; optical modulation; optical polymers; passive optical networks; semiconductor lasers; superluminescent diodes; surface emitting lasers; wavelength division multiplexing; WDM-PON system; bit rate 2.5 Gbit/s; current 50 mA; distance 20 km; hybrid integration; laser output power; mode spacing; polymer Bragg reflector; power 12.2 mW; power penalty; slope efficiency; standard single-mode fiber; superluminescent diode; temperature 25 degC; tunable external cavity laser; wavelength 20 nm; wavelength division multiplexed passive optical network; wavelength tuning; Distributed Bragg reflectors; Passive optical networks; Polymers; Power generation; Superluminescent diodes; Tuning; Wavelength division multiplexing; External cavity laser; polymer Bragg reflector (PBR); spot-size converter; superluminescent diode (SLD); tunable laser; wavelength division multiplexed-passive optical network (WDM-PON) system;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2011.2130515
