Abstract
Proposed is a new method to synthesise the 8-ary quadrature amplitude modulation (8QAM) signal and demonstrate the 112Gbit/s polarisation-multiplexed 8QAM system. The proposed transmitter consists of a dual-drive Mach-Zehnder modulator (DD-MZM) and phase modulators in tandem. The DD-MZM is utilised to manipulate the amplitude and phase of the optical signal by adjusting its chirp. The optical signal-to-noise ratio sensitivity of the 112Gbit/s polarisation-multiplexed 8QAM signal to achieve the bit error rate of 10 -3 is measured to be 18.8dB (in 0.1nm resolution bandwidth).
Original language | English |
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Pages (from-to) | 511-513 |
Number of pages | 3 |
Journal | Electronics Letters |
Volume | 48 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2012 Apr 26 |
Externally published | Yes |
ASJC Scopus subject areas
- Electrical and Electronic Engineering