title: Tunable external cavity laser employing uncooled superluminescent diode.
abstract: 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.
authors.affiliation: PhotoniciWireless Convergence Components Department, Electronics and Telecommunications Research Institute, Yuseong-gu, Daejeon, Republic of Korea. osh@etri.re.kr
authors.forename: Su Hwan
authors.initials: SH
authors.lastname: Oh
authors.forename: Ki Soo
authors.initials: KS
authors.lastname: Kim
authors.forename: Jung Jin
authors.initials: JJ
authors.lastname: Ju
authors.forename: Min-Su
authors.initials: MS
authors.lastname: Kim
authors.forename: Ki-Hong
authors.initials: KH
authors.lastname: Yoon
authors.forename: Dae Kon
authors.initials: DK
authors.lastname: Oh
authors.forename: Young-Ouk
authors.initials: YO
authors.lastname: Noh
authors.forename: Hyung-Jong
authors.initials: HJ
authors.lastname: Lee
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D054023:Lasers, Semiconductor; D008029:Lighting / Q000295:instrumentation*; D008163:Luminescent Measurements / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013696:Temperature