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18. Linear AWG-based modulators

Author

B. Gomez Saavedra, Gabriella Cincotti, Ronald Kaiser, International Conference on Optical Transparent Networks (ICTON) Budapest, Hungary 2015, Cincotti, Gabriella, Saavedra, B. Gomez, and Kaiser, R.

Subjects
Physics, business.industry, Phase distortion, Phase (waves), Physics::Optics, Arrayed waveguide grating, law.invention, QAM, Amplitude, Optical modulator, Optics, law, Splitter, Radio frequency, business
Abstract

We numerically evaluate the performance of optical vectorial linear modulators, which consist of asymmetric power splitter, phase shifters and phase modulators (PM); 2N-level quadrature amplitude modulated (QAM) signals are generated by using only N single-drive two-level (binary) RF signals. We also demonstrate that a proper architecture design, with phase and amplitude modulators, largely increases the constellation size. Finally, we show that a more compact layout can be achieved with an arrayed waveguide grating (AWG) configuration. The influence of the insertion losses, phase distortion and power imbalance are also investigated.

Published
2015

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