Proposed in this paper is a flexible scheme of all-optical packet header extraction with SOA-based asymmetric Mach-Zehnder interferometer (SOA-MZI). The effect of cross-phase modulation (XPM) and cross-gain modulation (XGM) in SOAs coupled with the interfering characteristics of MZI are employed to make the proposal simple, fast and integrable, with no special treatment of the header pulses. In addition, the scheme, by changing parameters, is applicable to extraction of different header length and bit-rate. Through numerical analysis, an intensity contrast ratio of more than 15dB at 100Gbit/s can be achieved.
A novel serial scheme of header extraction for optical unslotted networks using SOA-MZI with differential modulation scheme was proposed in this paper for the first time. Numerical analysis and simulation show, that more than 15dB contrast ratio of the separated header at 2.5Gbit/s to the suppressed payload at 40Gbit/s could be achieved. In addition, the SOA-MZI parameters are discussed and designed to optimize the performance of the proposed scheme.
Proposed in this paper is a novel packet-level self-synchronization scheme with Semiconductor optical amplifier based symmetric Mach-Zehnder interferometer (SOA-MZI). The effect of cross-phase modulation (XPM) and cross-gain modulation (XGM) in SOA and the interfering characteristics of MZI are combined to make the proposal simple, fast and integrable, with no special treatment of the marker pulses. Through numerical analysis and properly design of the parameters, more than 20dB intensity contrast ratio of 100G/s RZ pseudorandom bit sequence can be achieved.
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