Capacitor-embedded 0.54 pJ/bit silicon-slot photonic crystal waveguide modulator

Xiaonan Chen, Yun Sheng Chen, Yang Zhao, Wei Jiang, Ray T. Chen

Research output: Contribution to journalArticlepeer-review


A high-speed compact silicon modulator based on the lateral capacitor configuration is experimentally demonstrated with low-power consumption and 3 dB modulation depth. The capacitor layout is introduced to scale down the total modulator capacitance to 30 × 10-15 F, which effectively reduces the rf power consumption to 0.54 pJ/bit. Exploiting the slow group velocity of light in the slot photonic crystal waveguides, the device reported herein exhibits higher modulation efficiency than conventional capacitor modulator and provides a VπL figure of merit of 0.18 V cm at the wavelength of 1548 nm.

Original languageEnglish (US)
Pages (from-to)602-604
Number of pages3
JournalOptics Letters
Issue number5
StatePublished - Mar 1 2009

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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