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  • Title: 40-Gb/s directly-modulated photonic crystal lasers under optical injection-locking.
    Author: Chen CH, Takeda K, Shinya A, Nozaki K, Sato T, Kawaguchi Y, Notomi M, Matsuo S.
    Journal: Opt Express; 2011 Aug 29; 19(18):17669-76. PubMed ID: 21935134.
    Abstract:
    CMOS integrated circuits (IC) usually requires high data bandwidth for off-chip input/output (I/O) data transport with sufficiently low power consumption in order to overcome pin-count limitation. In order to meet future requirements of photonic network interconnect, we propose an optical output device based on an optical injection-locked photonic crystal (PhC) laser to realize low-power and high-speed off-chip interconnects. This device enables ultralow-power operation and is suitable for highly integrated photonic circuits because of its strong light-matter interaction in the PhC nanocavity and ultra-compact size. High-speed operation is achieved by using the optical injection-locking (OIL) technique, which has been shown as an effective means to enhance modulation bandwidth beyond the relaxation resonance frequency limit. In this paper, we report experimental results of the OIL-PhC laser under various injection conditions and also demonstrate 40-Gb/s large-signal direct modulation with an ultralow energy consumption of 6.6 fJ/bit.
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