Open AccessRobust phase-shift-keying Silicon photonic modulator
Author(s) -
Donald Adams,
Abdelsalam Aboketaf,
Stefan F. Preble
Publication year - 2012
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.017440
Subject(s) - keying , phase modulation , amplitude and phase shift keying , amplitude shift keying , electro optic modulator , optics , quadrature amplitude modulation , phase (matter) , phase shift keying , amplitude , signal (programming language) , modulation (music) , photonics , on off keying , physics , optical modulator , materials science , pulse amplitude modulation , telecommunications , computer science , phase noise , bit error rate , decoding methods , programming language , quantum mechanics , detector , acoustics , pulse (music)
Here we propose a robust silicon modulator that seamlessly generates phase shift keyed data. The modulator has very low insertion loss and is robust against electrical amplitude variations in the modulating signal; specifically a 50%-200% variation in modulating amplitude leads to only a π/9 variation in output optical phase, corresponding to only ± 10% variation in the differentially detected signal. This yields a ~2.5dB enhancement in SNR over OOK (on-off-keying) formats.