Open AccessTunable external cavity laser employing uncooled superluminescent diode
Author(s) -
Su Hwan Oh,
Ki Soo Kim,
Jung Jin Ju,
Minsu Kim,
Ki-Hong Yoon,
Dae Kon Oh,
Young-Ouk Noh,
Hyung–Jong Lee
Publication year - 2009
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.010189
Subject(s) - materials science , optics , optoelectronics , laser , distributed bragg reflector , superluminescent diode , waveguide , diode , laser diode , refractive index , wavelength division multiplexing , wavelength , optical power , physics
We have fabricated a tunable external cavity laser (T-ECL) based on a superluminescent diode and a polymeric waveguide Bragg reflector, providing a cost-effective solution for wavelength division multiplexing-passive optical network (WDM-PON) systems. The wavelength of the T-ECL is tuned through 100 GHz-spacing 16 channels by the thermo-optic tuning of the refractive index of the polymer waveguide at a low input power of 70 mW. The maximum output power and the slope efficiency of the uncooled diode at 20 (75) degrees C are 8.83 (3.80) mW and 0.107 (0.061) W/A, respectively. The T-ECL operated successfully in the direct modulation for 1.25 Gbit/s transmissions over 20 km.