Demonstration of 10-40-Gbaud baud-rate-tunable optical generation of 16-QAM from a QPSK signal using a variable DGD element

• Published in: CLEO: 2011 - Laser Science to Photonic Applications pp. 1 - 2
• Main Authors: Bakhtiari, Zahra, Jian Wang, Xiaoxia Wu, Jeng-Yuan Yang, Nuccio, Scott R., Hellwarth, Robert W., Willner, Alan E.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.05.2011
• Subjects: Bit error rate; Optical attenuators; Optical interferometry; Optical modulation; Optical polarization; Phase shift keying; Quadrature amplitude modulation

We experimentally demonstrate a tunable optical generation of up to 40-Gbaud 16- QAM from a QPSK signal using a variable DGD element based on vector addition between two polarization states. We also show the baud rate tunability and investigate the tolerance of 16-QAM generation to the DGD offset.