Title :
An optical network unit for WDM access networks with downstream DPSK and upstream remodulated OOK data using injection-locked FP laser
Author :
Hung, Wai ; Chan, Chun-Kit ; Chen, Lian-Kuan ; Tong, Frank
Author_Institution :
Dept. of Inf. Eng., Chinese Univ. of Hong Kong, Shatin, China
Abstract :
We investigate the use of optical differential phase-shift keying (DPSK) as the downstream modulation format in a low-cost upstream data remodulation scheme for a wavelength-division multiplexing (WDM)-based passive optical network. A 2.5-Gb/s upstream data transmitter is realized by directly modulating a Fabry-Perot (FP) laser, injection-locked with a 10-Gb/s downstream optical DPSK signal. A simple polarization-offset technique is proposed to largely minimize the induced power penalty.
Keywords :
differential phase shift keying; optical fibre networks; optical modulation; wavelength division multiplexing; 10 Gbit/s; 2.5 Gbit/s; Fabry-Perot laser; WDM access networks; WDM-based passive optical network; directly modulating; downstream DPSK; downstream modulation format; downstream optical DPSK signal; induced power penalty; injection-locked; injection-locked FP laser; low-cost upstream data remodulation scheme; optical differential phase-shift keying; optical network unit; polarization-offset technique; upstream data transmitter; upstream remodulated OOK data; wavelength-division multiplexing based passive optical network; Differential phase shift keying; Differential quadrature phase shift keying; Fabry-Perot; Optical fiber networks; Optical modulation; Optical network units; Optical transmitters; Passive optical networks; WDM networks; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.818055
