title: Near-infrared tunable lasers with polymer waveguide Bragg gratings.
abstract: Wavelength tunable lasers operating at near infrared (NIR) wavelength are demonstrated through the thermo-optic (TO) refractive index tuning of polymer waveguide Bragg reflectors. The polymer-waveguide device has superior TO efficiency for substantially changing the refractive index, and it enables direct tuning of the Bragg reflection wavelength over a wide range. The waveguide is optimized for NIR wavelengths, and a third-order Bragg reflector is incorporated for facilitating fabrication of the grating. The laser exhibits an output power of 0 dBm, a side-mode suppression ratio of 40 dB, and a tuning range of 21 nm.
authors.affiliation: School of Electrical Engineering, Pusan National University, Pusan (Busan), South Korea.
authors.forename: Nam-Seon
authors.initials: NS
authors.lastname: Son
authors.forename: Kyung-Jo
authors.initials: KJ
authors.lastname: Kim
authors.forename: Jun-Whee
authors.initials: JW
authors.lastname: Kim
authors.forename: Min-Cheol
authors.initials: MC
authors.lastname: Oh
mesh_terms: D004867:Equipment Design; D007259:Infrared Rays; D054025:Lasers, Dye; D055095:Optics and Photonics / Q000295:instrumentation*; D011108:Polymers / Q000737:chemistry*; D012031:Refractometry / Q000295:instrumentation*; D012666:Semiconductors
chemical_list: D011108:Polymers