Title :
Generation of broadband optical combs with high OSNR for CW-THz wave generation by photonic down-conversion
Author :
Morohashi, Isao ; Chiba, Ryosuke ; Irimajiri, Yoshihisa ; Sakamoto, Takanori ; Katayama, Ikufumi ; Sekine, Norihiko ; Kawanishi, Tetsuyas ; Kasamatsu, Akifumi ; Hosako, Iwao
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Koganei, Japan
Abstract :
Generation of broadband optical comb with high OSNR was demonstrated by a combination of a Mach-Zehnder-modulator-based flat comb generator and a nonlinear fiber. To generate broadband combs with high OSNR, we compared three types of nonlinear fibers; a dispersion-flattened dispersion-decreasing fiber (DF-DDF), a dispersion-flattened fiber (DFF) and a highly nonlinear, dispersion-shifted fiber (HNL-DSF). As a result, we found that the HNL-DSF is suitable for THz wave generation in the range of 3 THz.
Keywords :
optical fibre dispersion; optical harmonic generation; optical modulation; terahertz wave generation; CW-THz wave generation; DF-DDF; DFF; HNL-DSF; Mach-Zehnder-modulator; OSNR; broadband optical comb generation; dispersion-flattened dispersion-decreasing fiber; dispersion-flattened fiber; dispersion-shifted fiber; flat comb generator; nonlinear fiber; photonic down-conversion; Broadband communication; Fiber nonlinear optics; Optical fiber dispersion; Optical fibers; Signal to noise ratio;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956263
