A multicast scheme in Wavelength-Division-Multiplexing passive optical network (WDM-PON) is realized by
superimposing multicast differential phase shift keying (DPSK) signal onto downstream point-to-point Manchester/NRZ
signal. A commercial electrical logic XOR gate is used to produce Manchester signal. The proposed system is
experimentally demonstrated with 5-Gb/s point-to-point Manchester/NRZ format signal and 1.25-Gb/s DPSK signal. At
the receiver side, a Mach-Zehnder delay-interferometer (MZDI) and a low pass filter (LPF) are employed to retrieve the
multicast DPSK signal.
A new adaptive erbium-doped fiber amplifier (EDFA) is proposed. In the amplifier, an array of 1×2 optical switches is
controlled to select the optimum length of erbium-doped fiber for different input power, and meanwhile pump power is
regulated, so good adaptivity for different applications can be obtained. Simulation experiments have demonstrated that
this amplifier can get high performance. It can be applied as preamplifier and line amplifier as well as power amplifier.
We propose a novel scheme to realize unicast and multicast in WDM-PON. Unicast data and multicast data are
modulated in Amplitude Shift Keying (ASK) format and Differential Phase Shift Keying (DPSK) format respectively.
Reflective Semiconductor Optical Amplifier (RSOA) is used to selectively erase the DPSK signal by controlling the
optical switch, and multicast is realized.
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.