Title :
12.5 GHz spaced 1.28 Tb/s (512-channel x 2.5 Gb/s) super-dense WDM transmission over 320 km SMF using multiwavelength generation technique
Author :
Suzuki, Hiro ; Fujiwara, Masamichi ; Takachio, Noboru ; Iwatsuki, Katsumi ; Kitoh, Tsutomu ; Shibata, Tomohiro
Author_Institution :
Network Innovation Labs., NTT Corp., Kanagawa, Japan
fDate :
3/1/2002 12:00:00 AM
Abstract :
We achieve a 512-channel super-dense wavelength-division-multiplexing (WDM) transmission with a 12.5 GHz channel spacing over 320 km (80 km/spl times/4) of standard single-mode fiber in the C+L-bands. Optical carrier supply modules, which are based on a flattened sideband generation scheme, are applied to generate the 512 wavelengths from only 64 distributed-feedback laser diodes with a frequency spacing of 100 GHz. Arrayed-waveguide gratings with a 12.5 GHz spacing are used in this super-dense WDM experiment.
Keywords :
diffraction gratings; distributed feedback lasers; integrated optics; optical fibre communication; semiconductor laser arrays; wavelength division multiplexing; 1.28 Tbit/s; 12.5 GHz; 320 km; arrayed-waveguide gratings; channel spacing; distributed-feedback laser diodes; flattened sideband generation scheme; frequency spacing; multiwavelength generation technique; optical carrier supply modules; optical fiber communication; single-mode fiber; super-dense WDM transmission; super-dense wavelength-division-multiplexing transmission; Bit rate; Channel spacing; Diode lasers; Fiber nonlinear optics; Frequency; Nonlinear optics; Optical filters; Optical modulation; Optical receivers; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
