A novel centralized light source OCDMA PON without wavelength filters is proposed and experimentally demonstrated.
The OCDMA coded signals and the unmodulated clock pulses are polarization-multiplexed and simultaneously
transmitted in the downlink. Then the received clock pulses at the ONU side are used as the source for the uplink
transmission. The experiment results based on a two-user 2.5 Gb/s OCDMA system show that excellent performance can
be achieved after a 20-km transmission.
A novel upstream data remodulation scheme with downstream ASK-DPSK modulation format is proposed for WDMPONs
in this letter. And this kind of scheme is also experimentally demonstrated on one particular wavelength channel.
Both the 2.5-Gb/s downstream optical DPSK signal and the 2.5-Gb/s downstream optical ASK signal are demodulated
respectively at the receiving side, while part of the downstream carrier is directly remodulated by an optical intensity
modulator for upstream transmission of 2.5-Gb/s data. System performance under different amplitude ratios of
downstream optical ASK signal is investigated. It is shown that effective reception and robust performance can be
achieved after having been transmitted for 25-km.
A hybrid 1D/2D en/decoding O-CDMA system is proposed to support multiple bit rates. To the best of our knowledge, a
hybrid O-CDMA system with 2.5Gb/s (OC-16) and 155Mb/s (OC-3) transmission along the single mode fiber with
length of 60km is first successfully demonstrated. In this experimental demonstration, phase coded SSFBGs with chip
rate up to 320Gchip/s are applied as 1-dimensional en/decoders in 2.5Gb/s transmission while 2D en/decoders are
applied in 155Mb/s real time video transmission. Error free transmission is achieved in 1D encoded 2.5Gb/s link; while
2D encoded 155Mb/s channel carrying video signal can be transmitted along the same fiber. This proposed hybrid
1D/2D en/decoding O-CDMA system can also be used for O-CDMA PONs to reduce the costs at the ONU side.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.