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Silicon DP-IQ Modulator for Low-Driving-Voltage Operation
Kazuhiro GOI Norihiro ISHIKURA Akira OKA Mikhail ILLARIONOV Haike ZHU Kensuke OGAWA Yuki YOSHIDA Ken-ichi KITAYAMA Tsung-Yang LIOW Guo-Qiang LO
C - Abstracts of IEICE TRANSACTIONS on Electronics (Japanese Edition)
Publication Date: 2017/10/01
Online ISSN: 1881-0217
Type of Manuscript: INVITED PAPER
silicon photonics, modulator, digital coherent,
Full Text(in Japanese): FreePDF(1.8MB)
Silicon photonics has been attracts attentions due to its potential to bring drastic reduction in cost and size for optical devices. This paper describes monolithic silicon dual-polarization in-phase quadrature modulator for low-driving-voltage operation, which is required for digital coherent transmission in metro-area or shorter-reach networks. The phase shifter for the modulator employs vertical pn-junction structure enabling a low Vπ of 2.5 V. A developed polarization rotator combiner can be integrated with the phase shifter without any additional fabrication process. Using the packaged modulator, we demonstrate high-speed modulations including quadrature amplitude modulations and transmissions in dual-polarization quadrature phase-shift-keying format.