Title :
A Flexible and Reliable 40-Gb/s OFDM Downstream TWDM-PON Architecture
Author :
Chien-Hung Yeh ; Chi-Wai Chow ; Ming-Hsiao Yang ; Dar-Zu Hsu
Author_Institution :
Dept. of Photonics, Feng Chia Univ., Taichung, Taiwan
Abstract :
In this paper, a flexible and reliable 40-Gb/s time and wavelength division multiplexing passive optical network (TWDM-PON) architecture is proposed and demonstrated. Here, a 4 × 10 Gb/s orthogonal frequency-division multiplexing (OFDM) downstream signal is achieved by utilizing four 2.5-GHz directly modulated lasers in the optical line terminal. A reflective optical semiconductor amplifier is utilized in each optical network unit to serve as upstream transmitter (Tx) transmitting 2.5-Gb/s on-off keying (OOK) and 10-Gb/s OFDM upstream traffic, respectively. In addition, the dynamic bandwidth (capacity) allocation and fiber fault protection also can be achieved by applying the new proposed PON architecture with software-defined networking approach.
Keywords :
OFDM modulation; amplitude shift keying; bandwidth allocation; optical transmitters; passive optical networks; semiconductor optical amplifiers; software defined networking; wavelength division multiplexing; OFDM upstream traffic; OOK; TWDM-PON architecture; bit rate 10 Gbit/s; bit rate 2.5 Gbit/s; bit rate 40 Gbit/s; capacity allocation; directly modulated lasers; dynamic bandwidth allocation; fiber fault protection; flexible reliable OFDM downstream; frequency 2.5 GHz; on off keying; optical line terminal; optical network unit; orthogonal frequency division multiplexing; passive optical network; reflective optical semiconductor amplifier; software-defined networking; upstream transmitter; wavelength division multiplexing; Optical fibers; Optical network units; Optical switches; Optical transmitters; Passive optical networks; Passive Optical Network (PON); Software-Defined Networking (SDN); Time and Wavelength Division Multiplexing (TWDM); Time and wavelength division multiplexing (TWDM); passive optical network (PON); software-defined networking (SDN);
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2015.2504970
