Title :
Real-time optical OFDM long-reach PON system over 100 km SSMF using a directly modulated DFB laser
Author :
Ming Chen ; Jing He ; Lin Chen
Author_Institution :
Key Lab. for Micro/Nano Opto-Electron. Devices of the Minist. of Educ., Hunan Univ., Changsha, China
Abstract :
A real-time base-band orthogonal frequency division multiplexing (OFDM) transceiver with a simple symbol synchronization and channel estimation scheme is implemented on only one off-the-shelf commercial field programmable gate array (FPGA). The real-time optical OFDM long-reach passive optical network (PON) system with direct detection over 100 km standard single-mode fiber (SSMF) employing a cost-effective directly modulated distributed feedback (DFB) laser has been successfully demonstrated experimentally. The experimental results show that the simplified symbol synchronization with low complexity and high accuracy is effective for long-reach optical OFDM transmission systems. After 100 km SSMF transmission, the power penalty at a bit-error rate of 1e-3 is only about 1.1 dB.
Keywords :
OFDM modulation; distributed feedback lasers; field programmable gate arrays; integrated optoelectronics; optical transceivers; passive optical networks; FPGA; SSMF; base band orthogonal frequency division multiplexing transceiver; channel estimation; direct detection; directly modulated DFB laser; directly modulated distributed feedback; distance 100 km; field programmable gate array; long reach PON system; passive optical network; real time optical OFDM; simple symbol synchronization; standard single mode fiber; Channel estimation; High-speed optical techniques; OFDM; Optical receivers; Passive optical networks; Real-time systems; Synchronization; Channel estimation; Long-reach passive optical network (LR-PON); Orthogonal frequency-division multiplexing (OFDM); Real-time signal processing; Symbol synchronization;
Journal_Title :
Optical Communications and Networking, IEEE/OSA Journal of
DOI :
10.1364/JOCN.6.000018
