Abstract
We have proposed and experimentally demonstrated three different optical front-ends to implement in
wavelength-division-multiplexing (WDM) radio-over-fiber (ROF) networks to minimize the cost of the ROF system. When
the number of WDM channels is small, such as smaller than four channels, the simplest front-end to generate WDM
optical millimeter (mm)-wave signals is to use only broadband direct-modulation laser (DML) for each WDM channel. In
this case, the expensive external modulator can be removed. However, when the number of WDM channels is large, such
as larger than four, the frond-end to generate WDM optical mm-wave signals can be realized by using an external
modulator to upconvert simultaneously all channels after the WDM channel signals are multiplexed. In this way, the
cost of the expensive external modulator will be shared by all channels. For seamless integration of WDM signals
that come from the existing backbone with ROF system, a broadband external modulator can be used to upconvert WDM
signals.
© 2007 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