Open Access40-Gb/s directly-modulated photonic crystal lasers under optical injection-locking
Author(s) -
ChinHui Chen,
Koji Takeda,
Akihiko Shinya,
Kengo Nozaki,
Tomonari Sato,
Yoshihiro Kawaguchi,
Masaya Notomi,
Shinji Matsuo
Publication year - 2011
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.017669
Subject(s) - photonic integrated circuit , photonics , materials science , optoelectronics , laser , bandwidth (computing) , optical interconnect , optics , cmos , electronic circuit , modulation (music) , optical power , chip , photonic crystal , interconnection , computer science , physics , electrical engineering , telecommunications , engineering , acoustics
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.