Bidirectional ROF Links Using Optically Up-Converted DPSK for Downstream and Remodulated OOK for Upstream

Author

Jia, Zhensheng ; Yu, Jianjun ; Boivin, David ; Haris, Muhammad ; Chang, Gee-Kung

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA

Volume

19

Issue

9

fYear

2007

fDate

5/1/2007 12:00:00 AM

Firstpage

653

Lastpage

655

Abstract

We propose a novel radio-over-fiber system to provide full-duplex services by using optical differential phase-shift keying modulation format at the central station for downstream and on-off keying remodulation of the downlink carrier at the base station (BS) for upstream. The optical carrier suppression modulation scheme is employed to simultaneously generate and up-convert 40-GHz optical millimeter wave. As the same optical carrier is used for both uplink and downlink, no additional light source is required at the BS, which greatly reduces the cost and simplifies the overall system. Simulations and experimental results show that the bidirectional 2.5-Gb/s data is successfully transmitted over 40-km single-mode fiber (SMF-28) with less than 2-dB power penalty

Keywords

amplitude shift keying; differential phase shift keying; microwave photonics; optical fibre networks; optical frequency conversion; optical modulation; radio-over-fibre; 2.5 Gbit/s; 40 GHz; 40 km; base station; bidirectional links; downlink carrier; downstream transmission; full-duplex services; modulation format; on-off keying remodulation; optical carrier suppression modulation; optical differential phase shift keying; optical millimeter wave upconversion; optically upconverted DPSK; radio-over-fiber links; radio-over-fiber system; single-mode fiber; upstream transmission; Base stations; Differential phase shift keying; Differential quadrature phase shift keying; Downlink; Light sources; Optical interferometry; Optical mixing; Optical modulation; Radio frequency; Signal generators; on–off keying (OOK); All-optical up-conversion; differential phase-shift keying (DPSK); optical carrier suppression (OCS); optical wireless; radio-over-fiber (ROF);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2007.894961

Filename

4142788