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Small-Form-Factor All-InP Integrated Laser Vector Modulator Enables the Generation and Transmission of 256-Gb/s PDM-16QAM Modulation Format
Small-Form-Factor All-InP Integrated Laser Vector Modulator Enables the Generation Transmission of 256-Gb/s PDM-16 QAM Modulation Format
2014/11/6
We demonstrate, using a compact InP-based integrated assembly of a tunable laser and a double-nested Mach-Zehnder modulator, generation of Nyquist-prefiltered QPSK and 16-QAM signals at 32-Gbaud. We t...
SOA/REAM as Vector Modulator for QAM Upstream
Fiber optics communications Modulation Semiconductor optical amplifiers
2015/5/21
Simultaneous encoding of information in the optical phase and amplitude for upstream transmission is demonstrated with an integrated SOA/REAM of small form factor. The crosstalk penalties between the ...
ISI Pre-equalization in a Vector Modulator for 5 Gsymbol/s 64-QAM
ISI Pre-equalization Vector Modulator Gsymbol/s
2015/7/31
We investigated the performance of electronic pre-equalization to compensate for ISI caused in a vector modulator for 5 Gsymbol/s 64QAM. Drastic improvement in the constellation was experimentally con...