Tunable monolithic DWDM band-selection interleaver filter switch on silicon-on-insulator substrate

Zhigang Wu*, Soichiro Honda, Junya Matsui, Katsuyuki Utaka, Tomohiko Edura, Masahide Tokuda, Ken Tsutsui, Wada Wada


研究成果: Article査読

13 被引用数 (Scopus)


A tunable band-selection interleaver filter switch formed on a silicon-on-insulator (SOI) substrate for dense wavelength-division-multiplexing (DWDM) system was fabricated, and its fundamental performances were experimentally demonstrated. The device consists of monolithic integration of a Michelson interferometer (MI) structure with two arm-waveguides with different lengths, appropriately designed for ITU-grid separation, a phase-modulation electrode on one arm and tunable wideband Bragg gratings reflectors. An SOI rib waveguide structure with a medium mode size was adopted for low loss and easy fabrication. A bandwidth of the grating, formed by electron beam (EB) lithography and deep reactive-ion etching (Deep-RIE), was rather large of 4 nm at -10 dB transmission level, from which a large coupling coefficient of the Bragg grating of 105 cm-1 was evaluated. A large tuning range of the Bragg grating of 17 nm was obtained. An extinction ratio of the interleaver filter was about 18 dB, and the interleaving switching was also attained with an applied electric power of 50 mW and a switching speed of about 1 ms.

ジャーナルJournal of Lightwave Technology
出版ステータスPublished - 2008 10月 1

ASJC Scopus subject areas

  • 原子分子物理学および光学


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