Abstract

Optical devices that introduce and compensate for dispersion serve an important role in communication networks, photonic signal processing, and nonlinear optics. In this article, we demonstrate a silicon photonic Bragg grating which simultaneously achieves a large dispersion and wide bandwidth. We measure the grating to have a dispersion of −146 ps/nm over a 171 GHz bandwidth, representing the highest demonstrated grating dispersion over this wide bandwidth in a standard thickness silicon photonics process. Additionally, we show a significant reduction of group delay ripple by tuning the grating using an integrated phase shifter array to address fabrication variations. We further use the silicon grating as a dispersive element in a direct-detection phase retrieval receiver for 40 GBd quadrature phase shift keying (QPSK) signals and achieve a bit error rate (BER) below the 20% forward error correction (FEC) threshold. These results establish the potential for scalable silicon photonic circuits leveraging large dispersion for optical communication and other applications.

Characterization and compensation of apodization phase noise in silicon integrated Bragg gratings

Rui Cheng, Ya Han, and Lukas Chrostowski
Opt. Express 27(7) 9516-9535 (2019)

Silicon-organic hybrid (SOH) Mach-Zehnder modulators for 100 GBd PAM4 signaling with sub-1 dB phase-shifter loss

Clemens Kieninger, Christoph Füllner, Heiner Zwickel, Yasar Kutuvantavida, Juned N. Kemal, Carsten Eschenbaum, Delwin L. Elder, Larry R. Dalton, Wolfgang Freude, Sebastian Randel, and Christian Koos
Opt. Express 28(17) 24693-24707 (2020)

Phase-sensitive amplification of a QPSK signal using a dispersion engineered silicon-graphene oxide hybrid waveguide

Zhihua Chen, Hongjun Liu, Zhaolu Wang, and Nan Huang
Appl. Opt. 59(7) 1801-1807 (2020)

Electrically packaged silicon-organic hybrid (SOH) I/Q-modulator for 64 GBd operation

Heiner Zwickel, Juned N. Kemal, Clemens Kieninger, Yasar Kutuvantavida, Jonas Rittershofer, Matthias Lauermann, Wolfgang Freude, Sebastian Randel, and Christian Koos
Opt. Express 26(26) 34580-34591 (2018)

Comparison of 8 × 112 Gb/s PS-QPSK and PDM-QPSK signals over transoceanic distances

Markus Nölle, Johannes Karl Fischer, Lutz Molle, Carsten Schmidt-Langhorst, David Peckham, and Colja Schubert
Opt. Express 19(24) 24370-24375 (2011)