论文信息 - Real-Time Software-Defined Multiformat Transmitter Generating 64QAM at 28 GBd

Real-Time Software-Defined Multiformat Transmitter Generating 64QAM at 28 GBd

We demonstrate a software-defined real-time optical multiformat transmitter. Here, eight different modulation formats are shown. Data rate and modulation formats are defined through software accessible look-up tables enabling format switching in the nanosecond regime without changing the transmitter hardware. No data are lost during the switching process. SP-64 quadrature amplitude modulation at 28 Gbd has been generated and tested. This allows us to generate a 336-Gb/s real-time pseudorandom bit sequence in a dual polarization setup.

[1] R.A. Shafik,et al. On the Extended Relationships Among EVM, BER and SNR as Performance Metrics , 2006, 2006 International Conference on Electrical and Computer Engineering.

[2] S. Okamoto,et al. 256-QAM (64 Gb/s) Coherent Optical Transmission Over 160 km With an Optical Bandwidth of 5.4 GHz , 2010, IEEE Photonics Technology Letters.

[3] Polina Bayvel,et al. 10.7 Gb/s electronic predistortion transmitter using commercial FPGAs and D/A converters implementing real-time DSP for chromatic dispersion and SPM compensation. , 2009, Optics express.

[4] David Hillerkuss,et al. Software-Defined Multi-Format Transmitter with Real-Time Signal Processing for up to 160 Gbit/s , 2010 .

[5] B. Zhu,et al. 10 × 224-Gb/s WDM transmission of 28-Gbaud PDM 16-QAM on a 50-GHz grid over 1,200 km of fiber , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

[6] G. Raybon,et al. 2.5 Tb/s (64/spl times/42.7 Gb/s) transmission over 40/spl times/100 km NZDSF using RZ-DPSK format and all-Raman-amplified spans , 2002, Optical Fiber Communication Conference and Exhibit.

[7] T. Sakamoto,et al. 16-level quadrature amplitude modulation by monolithic quad-parallel Mach-Zehnder optical modulator , 2010 .

[8] M. Secondini,et al. Novel optical modulation scheme for 16-QAM format with quadrant differential encoding , 2009, 2009 International Conference on Photonics in Switching.