Towards Polarization Diversity on the SOI Platform With Simple Fabrication Process

Yunhong Ding, Liu Liu, Christophe Peucheret, Jing Xu, Haiyan Ou, Kresten Yvind, Xinliang Zhang, Dexiu Huang

Research output: Contribution to journalJournal articlepeer-review


We present a polarization diversity circuit built on the silicon-on-insulator (SOI) platform, which can be fabricated by a simple process. The polarization diversity is based on two identical air-clad asymmetrical directional couplers, which simultaneously play the roles of polarization splitter and rotator. A silicon polarization diversity circuit with a single microring resonator is fabricated on the SOI platform. Only ${1-dB polarization-dependent loss is demonstrated. A significant improvement of the polarization dependence is obtained for 20-Gb/s nonreturn-to-zero differential phase-shift keying (NRZ-DPSK) demodulation using the polarization diversity circuit, compared to a single microring resonator without polarization diversity.
Original languageEnglish
JournalI E E E Photonics Technology Letters
Issue number23
Pages (from-to)1808-1810
Publication statusPublished - 2011

Bibliographical note

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  • Integrated optics devices
  • Microring resonator
  • Nonreturn-to-zero differential phase-shift keying (NRZ-DPSK) demodulation
  • Polarization diversity


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