Abstract
A single-channel 400-Gb/s transmission with a polarization-multiplexed, 10-Gsymbol/s, four-optical time-division multiplexed (OTDM) 32 return-to-zero/quadrature amplitude modulation (RZ/QAM) scheme is demonstrated for the first time. By using an optical phase-locked loop technique and a clock recovery circuit, we have successfully obtained a very stable pulsed-local oscillator whose phase was locked to the transmitter, and achieved precise demultiplexing and demodulation simultaneously. As a result, 400-Gb/s data were transmitted over 225 km with a bit-error-rate performance below the forward-error correction limit. Furthermore, we also realized a 320-Gb/s to 450-km transmission with an OTDM 16 RZ/QAM scheme.
Original language | English |
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Pages (from-to) | 562-564 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 22 |
Issue number | 8 |
DOIs | |
Publication status | Published - 2010 Apr 15 |
Keywords
- Coherent transmission
- optical phase-locked loop (OPLL)
- optical time-division multiplexing (OTDM)
- polarization-multiplexing (PM)
- quadrature amplitude modulation (QAM)
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering