Silicon-wire-based ultrasmall lattice filters with wide free spectral ranges

Silicon-wire-based ultrasmall lattice filters with wide free spectral ranges

Using silicon-on-insulator-based silicon-wire waveguides with submicrometer cross sections, we constructed ultrasmall channel-dropping lattice filters for 1.5-microm infrared systems. The waveguide's low-loss bends with 2.5-microm radius reduce the total length of the filter to less than 100 mi...

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Veröffentlicht in:Optics letters 2003-09, Vol.28 (18), p.1663-1664
Hauptverfasser: Yamada, Koji, Shoji, Tetsufumi, Tsuchizawa, Tai, Watanabe, Toshifumi, Takahashi, Jun-ichi, Itabashi, Sei-ichi
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container_end_page 1664
container_issue 18
container_start_page 1663
container_title Optics letters
container_volume 28
creator Yamada, Koji
Shoji, Tetsufumi
Tsuchizawa, Tai
Watanabe, Toshifumi
Takahashi, Jun-ichi
Itabashi, Sei-ichi
description Using silicon-on-insulator-based silicon-wire waveguides with submicrometer cross sections, we constructed ultrasmall channel-dropping lattice filters for 1.5-microm infrared systems. The waveguide's low-loss bends with 2.5-microm radius reduce the total length of the filter to less than 100 microm and enlarge the free spectral range to more than 80 nm. The measured spectra show fine channel-dropping characteristics, and the results agree well with numerical predictions. Moreover, we have succeeded in tuning the dropping wavelength by adjusting the lengths of the delay lines.
doi_str_mv 10.1364/OL.28.001663
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