Abstract
A bidirectional three-band lightwave transport system is proposed and
experimentally demonstrated for both fiber-to-the-X (FTTX) and
radio-over-fiber (RoF) networks. By cascading a phase modulator (PM) and a
Mach-Zehnder modulator (MZM) to generate multiple coherent lightwaves,
hybrid 1.25 Gbps baseband (BB), 1.25 Gbps/20 GHz microwave (MW), and 1.25
Gbps/40 GHz millimeter-wave (MMW) downstream signals and a 1.25 Gbps BB
upstream signal are simultaneously transmitted. Furthermore, with an
assistance of an optical signal-to-noise ratio (OSNR) enhancement circuit,
sufficient low bit error rate (BER) values are experimentally achieved for
both down-link BB/MW/MMW and up-link BB signals. No additional
high-frequency local oscillator, mixers and upstream laser diode are
required in both transmitter and receiver sites. Under this architecture,
both wire-lined and wireless clients can be simultaneously served without
using any extra device/equipment to convert the downstream signals among BB,
MW and MMW formats.
© 2011 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription
Add to BibSonomy