Title :
Applications of 40-Gb/s Chirp-Managed Laser in Access and Metro Networks
Author :
Yu, Jianjun ; Jia, Zhensheng ; Huang, Ming-Fang ; Haris, Muhammad ; Ji, Philip N. ; Wang, Ting ; Chang, Gee-Kung
Author_Institution :
NEC Labs. America, Princeton, NJ
Abstract :
We investigate 40-Gb/s cost-efficient transmitter for access and metro networks. This 40-Gb/s transmitter comprises a standard directly modulated distributed-feedback (DFB) laser and a subsequent optical filter. Large dispersion tolerance of this transmitter is realized by chirp control through the phase correlation between adjacent bits for the destructive interference in order to erase the power of ldquo0rdquo bits while enhancing the extinction ratio. The chirp model of the DFB laser and the optimum parameters of the optical filter have been numerically analyzed. The chirp-managed 42.8-Gb/s transmission over 20-km standard single mode fiber (SSMF or SMF-28) without dispersion compensation and a centralized lightwave WDM-PON system are experimentally demonstrated. We have also realized the transmission over 100-m graded index plastic optical fiber (GI-POF). Moreover, the application in the metro network over 240-km SSMF or SMF-28 has also been investigated in this paper.
Keywords :
chirp modulation; distributed feedback lasers; gradient index optics; metropolitan area networks; optical correlation; optical fibre dispersion; optical fibre filters; optical fibre subscriber loops; optical modulation; optical transmitters; wavelength division multiplexing; DFB; DML; GI-POF; access network; bit rate 40 Gbit/s; bit rate 42.8 Gbit/s; centralized lightwave WDM-PON system; chirp-managed laser; cost-efficient transmitter; destructive interference; directly modulated laser; dispersion tolerance; distance 20 km; distance 240 km; graded index plastic optical fiber; metro networks; modulated distributed-feedback laser; optical filter; phase correlation; single mode fiber; wavelength-division-multiplexing passive optical network; Chirp modulation; Extinction ratio; Fiber lasers; Interference; Laser modes; Optical fiber dispersion; Optical filters; Optical transmitters; Plastics; Power system modeling; Access network; adiabatic chirp; amplitude modulation (AM); directly modulated lasers (DMLs); dispersion compensation; frequency; metro network; phase correlation;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2008.2006064
